The overwhelming feeling one encounters in the moments leading up to a party to take a shit. Scientific research has discovered this phenomenon is caused by two main factors, anxiety and antcipation.
Preemptive shitting is also done to avoid the fear and embarrassment of being "that guy/girl" who ruined the party by taking a massive, smelly shit.
Losing one's sex drive to someone attractive before a party in order to not do anything sexual with an unattractive person(s) at the party.
When a person knows that they'll do something naughty with someone that they really don't want to, they do a pre-partypinch (sometimes referred to as a pre-pinch).
Rick: I 'eard Chantelle was going to the party at the Chalk, so I'm gunna have a pre party pinch with the babe next door before I go.
Mick: Yeah wouldn't want to have a repeat of last time she was at the same party as you. Don't shit yourself with the neighbour like last time.
Rick: Leave it out.
Situation in which a person becomes so intoxicated while hanging out with friends, that they pass out or black out before going out to bars
Person #1: "Oh man, what the hell happened last night?"
Person #2: "Bro, I knew you were gonna pre-party ejaculate drinking that scotch, bro; you barfed in the cab on the way to the bars.
Person #1: "Did I hook up with anyone?"
By Kristal
Pre Rave Party Shirt
when someone is tricked into wearing a shirt that has been secretly swabbed with semen
so did you hear about those dudes who got their buddyto rock a pre rave party shirt!?
By Grete
Party Pre-ejaculate
When someone gets wasted at the beginning of a party and has to leave or passes out. It can also refer to the phenomenon of making party plans for Saturday night but getting so drunk or staying up so late on Friday that you can't make it.
A party in which you watch all the Harry Potter movies that have already been made up until midnight when you then pile in a car to see the next film. Often accompanied by Harry Potter look alike contests and Potter trivia.
Bro: "Hey Dude i'm dying my hair red and shaving lightning bolts into my leg hair for the Harry Potter pre game party!!"
Dude: "Bro, don't pregame too hard"