Seat your guests at a table around a leak-proof plastic jack-o'-lantern, and spread out a deck of cards around the pumpkin, keeping them face down. Assign random rules to each card. For example: each time someone draws a "king," that person must take a sip of their drink; each time a person draws a "queen," they can make someone else drink; each time a person draws a "2," they have to stop using any word that starts with the letter T, and if they slip up, they have to drink.
There are just two musts: one card has to call for guests to pour a shot-size serving of their drink into the plastic pumpkin, and the "ace" must require whoever pulls it to drink the contents of the pumpkin. (As you can probably imagine, this game works best when everyone is drinking different kinds of beverages.)
