Everyone chips in and buys a pitcher. 
The pitcher is passed around the table clockwise. 
Each person drinks as much as they want from it. 
The person sitting to the right of the one who 
finishes the pitcher buys the next round. 
It's simple, but great. (You really have to play a 
round or two to understand all the subtleties of this game.)

A similar version is as follows: Each time a sip is 
taken, a quarter (or suitable ante) is tossed into 
the pitcher by the drinker. Whoever chugs the pitcher 
dry, i.e., drinks for dollars, collects the loot. It 
could be advised to use nickels vs quarters as, when 
swallowed, they tend to pass through the digestive 
system easier.