When a cool guy rekts you with facts and logic that don't care about your feelings.
Person a: I don't think mental disorders should be widely accepted.
Person b: ur dumb, you're an idiot, how could you even think something so stupid. Guys, he's meming
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?"