A lighter form of referring to someone as an offensive form of gyspy, due to the comical ending of the phrase. Often used in jest. Although gypsy's are stereotyped in modern society as being 'lowlife', many of them are actually perfectly normal people, thus making this phrase a derogatory term.
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?"