My friends and I have been perfecting this game for the last few weeks now, the rules are as follows
1) 2 cards from 2 suits are picked at random
2) Whoever draws the same suit is your partner
4) Loosing team takes shots.
5) First person to take two shots in a row has to switch out.
5) Rinse, repeat, get smashed.
oh my god. this is great.