Riders of passengers take off their pants as part of the annual No Pants Subway Ride

Metrather travelers from New York got to see a lot more of their fellow passengers on Sunday.

The bald cheeks were all part of the annual No Pants Subway Ride, where street wearers covered their trousers and clothes – the journey in their underwear.

The tradition started 18 years ago by an improvisation group in New York City and has spread to public transit lines from San Francisco to Jerusalem.

Organizers call it an international celebration of follies & # 39 ;.

A participant in the 18th annual & # 39; No Pants Subway Ride & # 39; laughs with a policeman in New York

A participant in the 18th annual & # 39; No Pants Subway Ride & # 39; laughs with a policeman in New York

The "No Pants Subway Ride" is an annual event that was started in 2002 by Improv Everywhere in New York

The "No Pants Subway Ride" is an annual event that was started in 2002 by Improv Everywhere in New York

The & # 39; No Pants Subway Ride & # 39; is an annual event started in 2002 by Improv Everywhere in New York

The goal of the stunt is to have the riders of the metro dress in normal winter clothes without pants while keeping a straight face

The goal of the stunt is to have the riders of the metro dress in normal winter clothes without pants while keeping a straight face

The goal of the stunt is to have the riders of the metro dress in normal winter clothes without pants while keeping a straight face

Metrorijders in the five boroughs took part in the 18th annual 'No Pants Subway Ride & # 39;

Metrorijders in the five boroughs took part in the 18th annual 'No Pants Subway Ride & # 39;

Metrorijders in the five boroughs took part in the 18th annual 'No Pants Subway Ride & # 39;

Participants rode the subway's dressed in normal winter clothes, but without pants and while they tried to keep a tight face on the uncomfortable journey

Participants rode the subway's dressed in normal winter clothes, but without pants and while they tried to keep a tight face on the uncomfortable journey

Participants rode the subway's dressed in normal winter clothes, but without pants and while they tried to keep a tight face on the uncomfortable journey

The event, organized by the comedic collective Improv Everywhere, started in 2002

The event, organized by the comedic collective Improv Everywhere, started in 2002

The event, organized by the comedic collective Improv Everywhere, started in 2002

The temperature hovered around freezing on Sunday, but that did not stop New Yorkers from dropping their pants for the annual No Pants Subway Ride.

The temperature hovered around freezing on Sunday, but that did not stop New Yorkers from dropping their pants for the annual No Pants Subway Ride.

The temperature hovered around freezing on Sunday, but that did not stop New Yorkers from dropping their pants for the annual No Pants Subway Ride.

Fellow riders in the subway got a lot of shows when the jokers got on the subway

Fellow riders in the subway got a lot of shows when the jokers got on the subway

Fellow riders in the subway got a lot of shows when the jokers got on the subway

  Many participants wore only shoes, underwear and coat to protect them from the cold weather

  Many participants wore only shoes, underwear and coat to protect them from the cold weather

Many participants wore only shoes, underwear and coat to protect them from the cold weather

It is the 18th annual No Pants Subway Ride. There were about 2,000 participants in New York according to the organizers

It is the 18th annual No Pants Subway Ride. There were about 2,000 participants in New York according to the organizers

It is the 18th annual No Pants Subway Ride. There were about 2,000 participants in New York according to the organizers

Participants are supposed to pretend they do not know each other and pretend to do their day normally. All wear winter coats, hats, scarves and gloves – the only unusual thing is their lack of trousers & # 39 ;.

Despite the ice-cold temperatures, riders in Chicago, London and Paris are falling to participate.

Participants are told that they have to step on trains and have to act as they normally would and receive an assigned point to take off their pants.

They are asked to keep a straight face and actually respond to anyone who asks them if they are cold

The event takes place in cities around the world, and this event is a celebration of follies

The event takes place in cities around the world, and this event is a celebration of follies

The event takes place in cities around the world, and this event is a celebration of follies

Temperatures reached about 32 degrees on Sunday afternoon for the annual No Pants Subway Ride

Temperatures reached about 32 degrees on Sunday afternoon for the annual No Pants Subway Ride

Temperatures reached about 32 degrees on Sunday afternoon for the annual No Pants Subway Ride

Nearly 900 people said they would take part in the ride, which started at 15.00 and was organized by Improv Everywhere

Nearly 900 people said they would take part in the ride, which started at 15.00 and was organized by Improv Everywhere

Nearly 900 people said they would take part in the ride, which started at 15.00 and was organized by Improv Everywhere

A man who participates in the annual "No Pants Subway Ride" is standing next to a law enforcement officer at Union Square in NYC

A man who participates in the annual "No Pants Subway Ride" is standing next to a law enforcement officer at Union Square in NYC

A man who participates in the annual & # 39; No Pants Subway Ride & # 39; is standing next to a law enforcement officer at Union Square in NYC

The unreliable joke has now spread to cities around the world, from Calgary to Prague

The unreliable joke has now spread to cities around the world, from Calgary to Prague

The unreliable joke has now spread to cities around the world, from Calgary to Prague

According to the New York City comedy group Improv Everywhere, the first No Pants Subway Ride took place in New York City in 2002, with only seven participating men

According to the New York City comedy group Improv Everywhere, the first No Pants Subway Ride took place in New York City in 2002, with only seven participating men

According to the New York City comedy group Improv Everywhere, the first No Pants Subway Ride took place in New York City in 2002, with only seven participating men

People take part in the annual "No Pants Subway Ride" in the Manhattan borough of New York City

People take part in the annual "No Pants Subway Ride" in the Manhattan borough of New York City

People take part in the annual 'No Pants Subway Ride & # 39; in the Manhattan borough in New York City

The No Pants Subway Ride fills the New York transit system with barely dressed travelers

The No Pants Subway Ride fills the New York transit system with barely dressed travelers

The No Pants Subway Ride fills the New York transit system with barely dressed travelers

Most people get on the subway with the pants before they blow their legs off and expose them, so everyone can see amusedness

Most people get on the subway with the pants before they blow their legs off and expose them, so everyone can see amusedness

Most people get on the subway with the pants before they blow their legs off and expose them, so everyone can see amusedness

Participants ride on the F-metro line during the 18th annual No Pants Subway Ride

Participants ride on the F-metro line during the 18th annual No Pants Subway Ride

Participants ride on the F-metro line during the 18th annual No Pants Subway Ride

The rules for the event are quite simple: a pair of underpants must be worn and although flashy designs are allowed, the organizers prefer that those involved look – at least from the waistline – as if they were busy with their daily lives.

This is to increase the impact that the participants have on the unconscious bystanders.

Only seven people participated in the opening event, but now thousands in large capitals around the world are participating in what organizers have a celebration of follies & # 39; to mention.

Uniforms and suits are encouraged to enhance the impact of the lower half, as well as props – bicycles, prams, shopping bags or a suitcase.

A man rides on the F-metro line during the 18th annual No Pants metro ride in the annual event organized by Improv Everywhere, a comedy collective from the city of New York

A man rides on the F-metro line during the 18th annual No Pants metro ride in the annual event organized by Improv Everywhere, a comedy collective from the city of New York

A man rides on the F-metro line during the 18th annual No Pants metro ride in the annual event organized by Improv Everywhere, a comedy collective from the city of New York

Participants stand on the platform of the West 4th, F subway line during the No Pants Subway Ride

Participants stand on the platform of the West 4th, F subway line during the No Pants Subway Ride

Participants stand on the platform of the West 4th, F subway line during the No Pants Subway Ride

Passengers are told as if they are just traveling as on any other working day

Passengers are told as if they are just traveling as on any other working day

Passengers are told as if they are just traveling as on any other working day

The cold weather in New York City has not stopped thousands of people from getting rid of the subway

The cold weather in New York City has not stopped thousands of people from getting rid of the subway

The cold weather in New York City has not stopped thousands of people from getting rid of the subway

Along with their tighty whiteys or boxers, riders must also try to keep a straight face

Along with their tighty whiteys or boxers, riders must also try to keep a straight face

Along with their tighty whiteys or boxers, riders must also try to keep a straight face

Part of the appeal of the event is that the participants are supposed to seem as if what they are doing is normal

Part of the appeal of the event is that the participants are supposed to seem as if what they are doing is normal

Part of the appeal of the event is that the participants are supposed to seem as if what they are doing is normal

A man reads the book while taking part in the annual No Pants subway ride in New York

A man reads the book while taking part in the annual No Pants subway ride in New York

A man reads the book while taking part in the annual No Pants subway ride in New York

Passengers here probably knew that the doors would close because of the fear of cooling down during the stunt

Passengers here probably knew that the doors would close because of the fear of cooling down during the stunt

Passengers here probably knew that the doors would close because of the fear of cooling down during the stunt

Participants are also forbidden to talk to each other and are instructed to do any activity that you would normally do on the train: newspaper, book, sewing kit & # 39 ;.

Regular Sunday passengers were stunned when men and women sat in their brightly colored underwear to talk, read, and take pictures of each other.

Commuters in London, Berlin and Prague all saw their trousers at the annual event that is growing steadily every year with more and more people who choose to participate.

A commuter walks past a fellow passenger who participates in the No Pants Subway ride

A commuter walks past a fellow passenger who participates in the No Pants Subway ride

A commuter walks past a fellow passenger who participates in the No Pants Subway ride

A woman waits for a train while taking part in the annual "No Pants Subway Ride" in Manhattan

A woman waits for a train while taking part in the annual "No Pants Subway Ride" in Manhattan

A woman waits for a train and takes part in the annual No Pants Subway Ride & # 39; in Manhattan

Now, in dozens of cities, New York is the original home of the event that aims to evoke a smile

Now, in dozens of cities, New York is the original home of the event that aims to evoke a smile

Now, in dozens of cities, New York is the original home of the event that aims to evoke a smile

Underwear is clearly visible while driving on the No Pants Subway ride

Underwear is clearly visible while driving on the No Pants Subway ride

Underwear is clearly visible while driving on the No Pants Subway ride

In London, the event is known as the No Trousers On The Tube ride.

Crowds met outside the National Gallery on Trafalgar Square before going underground where they boarded trains on various metro lines in the capital.

More than 100 people piled on the Piccadilly line, where they struggled to remove their pants because of the crowds.

Hundreds of London metro commuters took part in the 10th annual No Trousers On The Tube ride this afternoon

Hundreds of London metro commuters took part in the 10th annual No Trousers On The Tube ride this afternoon

Hundreds of London metro commuters took part in the 10th annual No Trousers On The Tube ride this afternoon

Regular sunday passengers were stunned when men and women in their brightly colored underwear were talking, reading and taking pictures of each other

Regular sunday passengers were stunned when men and women in their brightly colored underwear were talking, reading and taking pictures of each other

Regular sunday passengers were stunned when men and women in their brightly colored underwear were talking, reading and taking pictures of each other

Brave passengers ride on a Jubilee Line train while taking part in the event on Sunday afternoon

Brave passengers ride on a Jubilee Line train while taking part in the event on Sunday afternoon

Brave passengers ride on a Jubilee Line train while taking part in the event on Sunday afternoon

Another group posed at Canada Wharf and participated in the No Trousers On The Tube event

Another group posed at Canada Wharf and participated in the No Trousers On The Tube event

Another group posed at Canada Wharf and participated in the No Trousers On The Tube event

After they switched to the Jubilee Line in Green Park, the group got off at Canary Wharf to do some aerobics on the platform before jumping into another train.

Other groups left for landmarks in London, including one to parliament.

Sisters Tessa and Matilda Deterding said they came for the first time because they liked the idea behind it.

Some brave party-goers even stopped to pose half-naked as they traveled through the city

Some brave party-goers even stopped to pose half-naked as they traveled through the city

Some brave party-goers even stopped to pose half-naked as they traveled through the city

Multitudes piled on brightly colored underwear on various pipelines across the capital

Multitudes piled on brightly colored underwear on various pipelines across the capital

Multitudes piled on brightly colored underwear on various pipelines across the capital

The event is part of the global No Pants Subway Ride, which started in New York in 2002 and has since expanded to more than 60 cities around the world, including Tokyo, Jerusalem and Moscow.

The event is part of the global No Pants Subway Ride, which started in New York in 2002 and has since expanded to more than 60 cities around the world, including Tokyo, Jerusalem and Moscow.

Some party-goers are reading in a train as they travel through the city

Some party-goers are reading in a train as they travel through the city

The event is part of the global No Pants Subway Ride, which started in New York in 2002 and has since spread to more than 60 cities around the world

Youth without pants take part in the No Pants Subway Ride & # 39; in Prague, Czech Republic on Sunday

Youth without pants take part in the No Pants Subway Ride & # 39; in Prague, Czech Republic on Sunday

Youth without pants take part in the No Pants Subway Ride & # 39; in Prague, Czech Republic on Sunday

Tessa, 24, from London, said: & # 39; We read about it and thought it sounded hilarious. I was not nervous about it.

I like the sentiment behind it, instead of a stiff upper lip it is a bit of a laugh. & # 39;

Matilda (22) said: & # 39; I especially chose my pants, you have to choose a beautiful opaque.

Four young people are waiting to board a train with brightly colored underwear, sports shoes and jackets in Prague

Four young people are waiting to board a train with brightly colored underwear, sports shoes and jackets in Prague

Four young people are waiting to board a train with brightly colored underwear, sports shoes and jackets in Prague

Some even chose to face the challenge shoeless when they made their way through a subway station

Some even chose to face the challenge shoeless when they made their way through a subway station

Some even chose to face the challenge shoeless when they made their way through a subway station

A man in Berlin, Germany, opted for bright pink underwear covered with cartoon images of broccoli

A man in Berlin, Germany, opted for bright pink underwear covered with cartoon images of broccoli

A man in Berlin, Germany, opted for bright pink underwear covered with cartoon images of broccoli

& # 39; You do not want to give too much spectacle. & # 39;

Unrestrained party goers then went to the Chandos pub in Trafalger Square for an after party.

The London event was organized by the Stiff Upper Lip Society, which asked participants to avoid strings / budgie smugglers / all-round views as we strive to entertain amusing underground users.

The London event was organized by the Stiff Upper Lip Society, who asked participants to "strings / budgie smugglers / see-throughs". to avoid

The London event was organized by the Stiff Upper Lip Society, who asked participants to "strings / budgie smugglers / see-throughs". to avoid

The London event was organized by the Stiff Upper Lip Society, who asked participants to "strings / budgie smugglers / see-throughs". to avoid

A group of three women sits in a circle line in their underwear

A group of three women sits in a circle line in their underwear

A young mother is waiting for a platform with her son

A young mother is waiting for a platform with her son

A group of three women (left) sits in a circle line in their underwear while a young mother (right) is waiting on a platform with her son in London

One of the organizers, Farhan Rasheed, said that there was not really a goal for the event, it was just a little fun

One of the organizers, Farhan Rasheed, said that there was not really a goal for the event, it was just a little fun

One of the organizers, Farhan Rasheed, said that there was not really a goal for the event, it was just a little fun

Some participants in Germany dressed even more extensively in bright orange Lycra shirts with their pink hair

Some participants in Germany dressed even more extensively in bright orange Lycra shirts with their pink hair

Some participants in Germany dressed even more extensively in bright orange Lycra shirts with their pink hair

One of the organizers, Farhan Rasheed, said that there was not really a goal for the event, it was just a bit of fun.

He added: "It makes no sense, we do not campaign or we do not create awareness of anything.

"People just enjoy it, it's a bit of a nonsense day out.

People walk to a Jubilee Line train when they participate in the annual No Trousers On The Tube Day

People walk to a Jubilee Line train when they participate in the annual No Trousers On The Tube Day

People walk to a Jubilee Line train when they participate in the annual No Trousers On The Tube Day

Celebrators show off brightly colored underwear with a pattern while braying the tube on a cold winter's day

Celebrators show off brightly colored underwear with a pattern while braying the tube on a cold winter's day

Celebrators show off brightly colored underwear with a pattern while braying the tube on a cold winter's day

The No Pants Subway Ride also took place in Amsterdam, the Netherlands on Sunday

The No Pants Subway Ride also took place in Amsterdam, the Netherlands on Sunday

The No Pants Subway Ride also took place in Amsterdam, the Netherlands on Sunday

Travelers gather at the Vijzelgracht metro station for a subway ride in their underwear in Amsterdam

Travelers gather at the Vijzelgracht metro station for a subway ride in their underwear in Amsterdam

Travelers gather at the Vijzelgracht metro station for a subway ride in their underwear in Amsterdam

Youth without pants take part in the No Pants Subway Ride & # 39; in Prague, Czech Republic

Youth without pants take part in the No Pants Subway Ride & # 39; in Prague, Czech Republic

Youth without pants take part in the No Pants Subway Ride & # 39; in Prague, Czech Republic

& # 39; You rarely get people who are insulted. It is London and London is used to it, they do everything to return to their book. & # 39;

The event also took place in Berlin and Prague on Sunday when dozens of passengers boarded the metro and half-dressed U-Bahn.

Some participants in Germany dressed even more extensively in bright orange Lycra shirts with their pink hair.

The No Pants Subway Ride also took place this weekend in Chicago, Amsterdam and San Francisco.

A man is depicted in Prague, Czech Republic. The project is only intended to surprise and cheer up fellow passengers

A man is depicted in Prague, Czech Republic. The project is only intended to surprise and cheer up fellow passengers

A man is depicted in Prague, Czech Republic. The project is only intended to surprise and cheer up fellow passengers

epa07280549 Youth without pants take part in the No Pants Subway Ride & # 39; in Prague, Czech Republic

epa07280549 Youth without pants take part in the No Pants Subway Ride & # 39; in Prague, Czech Republic

epa07280549 Youth without pants take part in the No Pants Subway Ride & # 39; in Prague, Czech Republic

Czech citizens take part in the event that is now a truly global phenomenon

Czech citizens take part in the event that is now a truly global phenomenon

Czech citizens take part in the event that is now a truly global phenomenon

A large group of enthusiastic Londoners and participants from other parts of the UK take part in the No-pants of 2019 on the Tube day, wear their underwear for fun, ride the London underground and walk around in London landmarks

A large group of enthusiastic Londoners and participants from other parts of the UK take part in the No-pants of 2019 on the Tube day, wear their underwear for fun, ride the London underground and walk around in London landmarks

A large group of enthusiastic Londoners and participants from other parts of the UK take part in the No-pants of 2019 on the Tube day, wear their underwear for fun, ride the London underground and walk around in London landmarks

Half-naked travelers filled almost an entire train wagon after gathering in their underwear at the Vijzelgracht metro station

Half-naked travelers filled almost an entire train wagon after gathering in their underwear at the Vijzelgracht metro station

Half-naked travelers filled almost an entire train wagon after gathering in their underwear at the Vijzelgracht metro station

Others in Amsterdam posted for photos because they surprised fellow passengers in their underwear

Others in Amsterdam posted for photos because they surprised fellow passengers in their underwear

Others in Amsterdam posted for photos because they surprised fellow passengers in their underwear

A group of fearless friends laughed together as they left a subway station during the event

A group of fearless friends laughed together as they left a subway station during the event

A group of fearless friends laughed together as they left a subway station during the event

A jubilee line car filled with passengers without legs that read and take photos

A jubilee line car filled with passengers without legs that read and take photos

A jubilee line car filled with passengers without legs that read and take photos

Travelers gather at the Vijzelgracht metro station for a ride on the subway in their underwea

Travelers gather at the Vijzelgracht metro station for a ride on the subway in their underwea

Travelers gather at the Vijzelgracht metro station for a ride on the subway in their underwea

The project is only meant to surprise and cheer up other passengers instead of being offensive

The project is only meant to surprise and cheer up other passengers instead of being offensive

The project is only meant to surprise and cheer up other passengers instead of being offensive

Passengers do not wear pants during the No Pants Subway Ride in Amsterdam, the Netherlands

Passengers do not wear pants during the No Pants Subway Ride in Amsterdam, the Netherlands

Passengers do not wear pants during the No Pants Subway Ride in Amsterdam, the Netherlands

The & # 39; flash mob & # 39; occurs in cities around the world, including New York, Boston, London, Berlin and Amsterdam

The & # 39; flash mob & # 39; occurs in cities around the world, including New York, Boston, London, Berlin and Amsterdam

The & # 39; flash mob & # 39; occurs in cities around the world, including New York, Boston, London, Berlin and Amsterdam

A woman rides in the subway with only a sweater as part of the No Pants Subway ride that took place in the Netherlands

A woman rides in the subway with only a sweater as part of the No Pants Subway ride that took place in the Netherlands

A woman rides in the subway with only a sweater as part of the No Pants Subway ride that took place in the Netherlands

A man reads a book while riding in the Amsterdam metro, while another man without slippers is nearby

A man reads a book while riding in the Amsterdam metro, while another man without slippers is nearby

A man reads a book while riding in the Amsterdam metro, while another man without slippers is nearby

People from the subway take part in the No Trousers Tube Ride in London

People from the subway take part in the No Trousers Tube Ride in London

People from the subway take part in the No Trousers Tube Ride in London

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