Take turns throwing cards into the bowl. If only one of you makes it the other drinks. If neither of you makes it, higher card drinks. If both of you make it neither of you drink.
If you both miss and throw the same card it's like war. Deal three cards out and throw the fourth card. Follow the rules above. Loser drinks 4, one for each card and the winner gets to make a rule.
You get drunk quick because someone is drinking almost everytime and it gets harder the more games you play.