Pitbull is apparently the official mascot-slash-singer of the World Cup , so he stopped by The Tonight Show on Thursday to prove he could work a soccer ball like the best of them. But it wasn’t the World Cup Jimmy Fallon was interested in. It was beer cups. The duo played a round of giant beer pong using a soccer ball. But Pitbull couldn’t score without his secret weapon: tight, ankle-revealing pants, circa his Opening Ceremony performance .