Are you with a group of friends betting on horses at the racetrack? A fun way to bet on horse races that gets everyone in your party involved is a group show parlay. It works like this: Have each person ante up $5, and pool the money. Each person in the group picks one race and one horse to bet to show. Place the first bet, and if you win, parlay the money on the next race and horse. Your winnings can add up very quickly. For example, if four people start with $20 and each person wins a $3 show price, you’ll have $101 after only four races!