My wife and I used to play a drinking game. Panty Shots.

Rules were simple: 1: a large cup capable of holding a large amount of mixed liquor. This is essential. 2: drink a shot every time you see a panty shot. Thats it. Thats the game. We watched Rosario Vampire. We would get wasted before the second episode due to the large amount of panty shots im that particular anime.