Roland Van Karsen, 6, and his sister Elise, 8, decided to set up a lemonade stand right by Muirfield Village on Thursday.
It turned out to be a lucrative decision for the youngsters.
In the video below by the Columbus Dispatch, the Van Karsen kids explain how Phil Mickelson pulled up, stepped out of his car and requested a $1 lemonade.
The kids got Mickelson the lemonade. He handed them a $100 bill and told them to keep the change:
How cool is that?