Jas-mine is a common word to define chavs. Jas-mines in plural consists out of the head Jas-mine and the Lowhood Jas-mine People who refer themselves to a "Jas-mine" are mostly known to spam "Mic up¨ or say "dont try me".
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?"