Perhaps you’ve seen the headlines while scrolling on your phone. Did you know you can bet on whether the Kansas City Chiefs or San Francisco 49ers will win the coin toss before Super Bowl LVIII on Sunday in Las Vegas? Or the color of the Gatorade the winning team will dump over its coach?

The NFL’s championship game is a feast day for such wagers, known as proposition, or “prop,” bets. They’re bets unrelated—or only tangentially related—to the outcome of a game. This year, the romance between Taylor Swift and Chiefs tight end Travis Kelce has added a twist.