What's on your mug?

Something socially unacceptable done in a social gathering.

Kelly knocked his beer out of his hand. What a party foul.

By Stroll

Something that goes wrong at a party. Often when someone spills or breaks or drops something at a party (often resulting in a mess or general spectacle), or when someone does something embarassing or dumb. Usually accompanied by someone actually yelling, "Party Foul!" while everyone else laughs because they're drunk.

** Jake drops beer and spills it all over the floor. Nick: PARTY FOUL!

By ninja girl

1. An action committed by an individual, either on purpose or not, that goes against the feel of the party or bar atmosphere. 2. To spill an alcoholic drink.

1. Going to a costume party with no costume 2. "Shit, you got that all over me. Party foul."

By B-flip and Skeet

When something stupid, embarrassing, or simply unacceptable is done at a party. Examples of this include spilling beer, breaking a lamp, throwing up, getting so drunk that you scoot on the floor in just your boxers, choking on a shot, ect.

Hey, can Alex come on Friday? Naw man, he'll probably party foul again.

By Steven Waterdog the Third

A moment during a social gathering when one does something embarrassing and/or stupid.

"Dude, I just spilled my drink all over Sarah's lap!" "Wow..major party foul."

By Whaaaat?!