In the game of beer pong when
you throw the ball at the opponent's cup and the ball lands in the cup, but the cup tips
over and spills off the table. The team's whose cup spilt
has to drink two of the remaining cups on the table. However, you can't win on a Walk the Plank.
Bob: You two have to drink two of those
Sam: No, you know you can't win on a Walk the Plank, I only need
to drink one.