Some people drink drinkables
Some people put those drinkables in SoloCup?s. And then play pong.
In its most basic form, not actually played with a bong.
Bongs can be an adequate form of pre-gaming. If pre-gaming, make sure to leave your bong on the table for the duration of the game, and if anyone makes a ball into the bong, that person must drink the bong water.