Beer pong was an Earth drinking game in which players attempted to toss ping pong balls into cups of beer. The beer would be drunk after a successful toss.
Four USS Discovery crew members played beer pong during a party on stardate 2136.8. Cadet Sylvia Tilly was paired with Lieutenant Rhys, who held the cup in his mouth. (DIS: "Magic to Make the Sanest Man Go Mad")
The game was not identified by name.