Used as a shortcut for a random, non important nobody that your friends barely know, or don't know need to know but still apart of the storyline when chattin it up with your friends.
"We were at this show waiting for Juiceboxxx to play and Randal came out of nowhere and pulled a beer from her crotch and offered it to Alyssa who handed it to Alex Hayes and now Alex has crabs on her face haha :).