Beer pong is a sport that involved drinking alcohol that was invented in the 20th century. It was a fixture of the Longueuil Cup playoffs in the 23rd century, being contested in men's and women's singles, as well as mixed doubles. (Star Trek: The Stoneship Files: "Alcoholic Massacre, Part II") The performance of beer pong players could be adversely affected by a stomach pumping weeks after one. (Star Trek: The Stoneship Files: "Super-Jupiter Beacon")