a student that no matter what, gotta snitch. trust me if you live in Quebec and study in a francophone school, that one student will snitch on you cuz you spoke another language.
Guy 1: man i fuckinghate Xavier, he's the teacher's meat rider.
Guy 2: nah frfr bro he needs to get tf outta here.
Xavier: i'm telling the teacher you said that.
Guy 1 & 2: FUCK YOU XAVIER!!!!!
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?"