“Pay up!”

You made a bet with your friend about a baseball game. You just won the bet, so you shout this to get him to pay you the money he owes you.

Pay up!

Audio by native English speakers

Pay up!

This is a phrase that you say to make a friend pay you after you win a bet. If you used it with people you don't know well, or with your friends in other situations, it might seem rude. But it's a perfect phrase for friendly bets.