Something socially unacceptable done in a social gathering.

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.

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. A mistake at a party e.g. someone stepping on someone elses foot, somebody bumping into people, somebody spilling beer everwhere, accidental cigarette burn, or when someone fumbles the pipe.

a person who fucks up a party due to his inability to handle his drinks, consequently making a complete ass of himself by constantly provoking fights and screaming "LET'S GOOOOOOOO" at every guy, girl, cops, cats, dogs, chairs, lamps, etc.

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

when someone fucks up at a party by dropping beer or breaking something or falling.