It sounds like you’re describing a playful scene where someone tries to catch a twenty-dollar bill while only using two fingers. The prankster is trying to get a bet going, but the other person is wary due to the prankster's reputation. It’s all fun and games, with a hint of revenge brewing as the prankster keeps trying to convince them.

If you want to expand this into a story or dialogue, we could explore the prankster's backstory, how they got their reputation, or maybe the girls plot their own revenge against him. What direction do you want to take this?