Drinking games, know any

There are 2 drinking games I play a lot "red or black" and "21" I know a few more but these are easy to play.

Red or Black, you play with a deck of cards, one person is the dealer and all you do is guess red or black, if you get it wrong you scull and go again until you get it right, then it goes along to the next person.

21, Take turns counting, you can 1 or 2 or 3, you can count 3 times max and then it passes to next player who counts 4 or 5 or 6 they can count 4 to 5 and pass to next person or even just 4 and so on until someone reaches 21, who ever lands on 21 has to scull. The person who landed on 21 then makes up a rule for a number, for example: instead of saying 9 you have to bark like a dog, and then the game starts over with the new rule in place, each time a person hits 21 they scull and make up a new rule.
The game could end up being something like this:

1 2 birdie , jump 5, do a hand stand, 7 8 bark like a dog, 10 11 , 12, 13 14 15, 16, meow, 18 19 20, 21: scull and make up a new rule for a number not used.

Dang 21 is actually pretty complicated.

These 2 are my favorite drinking games, I know a few others but not many.

Any one know of any other drinking games? Go on share it.

Drinking Game Red Black 21 Share Games