LEXINGTON, Kentucky (WHDH) -- A dying man's last wish turns into an unbelievable act of paying it forward.

A waitress in Lexington, Kentucky received a big tip, a really big tip.

"Are you kidding me?” she asked.

To understand the waitress's reaction, you have to understand Seth Collins' caption: "That's what he wanted."

"He was sort of a free spirit,” said Collins of his brother Aaron.

Aaron was Seth’s younger brother who passed away last week.

Aaron passed away due to "lack of oxygen to his brain," according to Seth Collins.

Three weeks after his 30th birthday, the family learned about Aaron's will with a very interesting request.

"He wanted us to go out and leave a huge tip. And he said not 25 percent. I'm talking 500 dollars for a pizza,” said Collins.

Aaron didn't have much money, so his brother set up a website in his name explaining everything. One day later, with $500 in hand, the Collins family went out to eat.

"This is where it's happening."

‘Puccini's Smiling Teeth’ - where one waitress was about to be all smiles herself.

"She's coming over to fill up drinks or ask how we are doing. I'm thinking she has no idea what's about to happen,” said Collins.

Then the bill arrived.

"Are you serious? Yes. Are you kidding me? No that's what he wanted."

The tip was more than 700 percent.

"Oh my god. I want to hug you,” she said.

The gesture was priceless.

"I don't even know what to do. That's crazy."

"To see it happen once he would have been thrilled to see what happened since then, he would have been amazed as we are,” said Seth Collins of his brother.

When Collins checked last, the website had more than 17,000 dollars in donations.

“That just touches all of us that it had that much of an emotional impact," said Collins.

"I'll share it with everyone. I'll give the kitchen some."

Aaron Collins’ family said as long as people keep donating, they plan to keep giving.