A Stage Hand is someone who lacks real acting ability, yet still wants to be part of a stage production. Usually drama dropouts if you will, they do not appreciate the art or talent of actors.
A person who makes the impossible possible, usually in stupid yet functional ways. They also have to fixeverything the actors break. For further information see ninja
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?"