Here's the way I've always played it....
ten cups on a side lined up like bowling pins, each filled with beer. Side A tosses the ping pong ball in an attempt to get it into one of B's cups.
B can play defense by swatting the ball away.
If A drains the ping pong ball (no bounce no rim) B drinks the entire cup,
Rim shots mean half..
Bounce shots mean two or all I don't remember (I suck at this game, kinda on purpose).
Rules. edge of the table is the foul line, your elbows may not pass the foul line.
Other rules as the game progresses as in quarters.
(Rules partially taken from experinces at University of West Virginia while trying to keep up with my 21 year old nephew and his friends)