Derived from the Californian tradition of cleaning out a garage for the soul purpose of throwing parties. This allows underage kids to drink and provide a safe place to get high.
Man 1: Lets Go Hit The Clubs
Man 2: We can't Joe isn't 21 yet Man 1: Fuck, well Jose has a California Party Room, lets crash it.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"