"Mom can definitely look forward to a new car or something," the lottery winner told KPIX.

Tang found the lucky $20 outside the San Francisco International Airport, and when he won, he wasn't sure if it was for real. (Video via San Francisco International Airport)

Tang, who works as a bartender, said most of it will go into savings, but:

"We gotta at least have a little celebration dinner kind of thing, right," he told ABC.

Tang says he also might try to pass his luck along by leaving random $20 bills on the street.

This video includes an image from Getty Images and redjar / CC BY SA 2.0.