Gas Station Pumper: Ay, buddy, what you like?
Driver: Stuff it up your turban, bitch!
Gas Station Pumper: Huh? I can't hear you.
Driver: I said, "Filler up!!"
It's basically were somebody walks into a gas station on all fours with only a ski mask on and asks the clerk "filler up please!" and 5 big black men come out and fill up all his holes with cum
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?"