My favourite drinking memories usually involve a game called "Kings." Basically a card game where:
A = everyone drinks
2-5 = you drink that number
5-9 = you assign that number of drinks to someone else
10 = thumbmaster (if you put your thumb on the table everyone else must; last person to do so drinks)
J = Make a Rule
Q = Questionmaster (if you ask a question and someone answers they drink)
K = I've Never (you must make an "I've never ..." sentance; anyone who has must drink)

We make up silly rules like:
"From now on you must pronounce all Ls as Rs, if you fail to do so you must drink"
or
"Anytime you use a pronoun you must drink"

So you get stupid silly sentances like:
"Ashrey needs to take a wird piss in the radies room"
or else
"I(Ashley) need to take a wild piss in the ladies room" would equal 4 drinks