Alaina Custer, a waitress at the Sup Dogs restaurant in Greenville, North Carolina, found a $ 10,000 tip on Saturday

A glass of water in a restaurant is usually free, but a generous dinner decided that two glasses of water asked for a generous tip.

A mysterious patron who later identified himself as a popular YouTube vlogger left a $ 10,000 tip at Sup Dogs in Greenville, North Carolina, on Saturday.

The customer came in, ordered two glasses of water and then left abruptly.

The waitress, Alaina Custer, was surprised to return to the table and find $ 10,000 in cash, according to WNCT-TV.

Custer took most of the money in cash, while the rest was divided among the other waitresses in the restaurant.

Alaina Custer, a waitress at the Sup Dogs restaurant in Greenville, North Carolina, found a $ 10,000 tip on Saturday

Alaina Custer, a waitress at the Sup Dogs restaurant in Greenville, North Carolina, found a $ 10,000 tip on Saturday

The customer came in, ordered two glasses of water and then left abruptly. The sup dogs are seen above

The customer came in, ordered two glasses of water and then left abruptly. The sup dogs are seen above

The customer came in, ordered two glasses of water and then left abruptly. The sup dogs are seen above

"Good people keep doing good things these days, so I thought it was great," said owner Bret Oliver.

"I've seen some really important advice, but not for $ 10,000, this was unexpected, once in a lifetime, it will never happen again in my life."

Locals later determined the identity of the mysterious diner: Jimmy Donaldson, who is also known for his online character, MrBeast

Locals later determined the identity of the mysterious diner: Jimmy Donaldson, who is also known for his online character, MrBeast

Locals later determined the identity of the mysterious diner: Jimmy Donaldson, who is also known for his online character, MrBeast

Later, the locals determined the identity of the mysterious diner: Jimmy Donaldson, who is also known for his online character, Mr Beast.

MrBeast is a YouTube personality that has almost 9 million subscribers.

Their YouTube videos, which are often quirky tricks designed to get a reaction, routinely generate tens of millions of hits, according to Business North Carolina.

Last December, MrBeast posted a video showing him giving his mother $ 100,000.

The video generated more than 5 million visits.

Another popular video showed MrBeast giving a tip to a $ 10,000 pizza delivery boy, just as he did to the Sup Dogs waitress.

Last May, it reached a milestone: 500 million total visits of its videos.

YouTube personalities with millions of subscribers earn millions of dollars a year thanks to their large following and the desire of advertisers to expand their audience.

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