The instinct of women to instantly drop whatever good time they may be having if one of their girlfriends is upset. Doesn't necessarily need to be at a prom, but good luck having a prom with out it, as they are training grounds for acts of promraderie in later life such as at weddings and any night at a bar involving 4 or more women.
Guy 1: Dude where'd your datego?
Guy 2: Her and 12 of her friends took off to the bathroom after one of them got a drink spilled on her.
Guy 1: That's some serious promraderie.
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.