The act of two or more women ducking on the head of a man's penis at the same time, as though they were fighting to be the one sucking in the head, but really they are working in unison to both have their mouths sucking on the head of the penis at the same time.
Look at that luckyguy over there. The three hot chicks are knobgobbing his cock.
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?"