The one bro in a group of bros who decides to stay sober and collect stories from the night, he/she is a good story teller with a good memory and isn't afraid to slightly stretch the truth to make stories more enjoyable. This bro is then entitled to tell said stories to other bros who were not around at the time.
Bro 1: Hey man so what did you guys do at that party last night?
Bro 2: I couldn't tell you man I don't remember a thing!
Bro 1: Oh damn must have been pretty wild then...
Bro 2: For real bro, ask Jason! He's our story bro.