Refers to all-out partying, getting wild, and crazier than most people could even imagine. Usually involves getting blacked out drunk and probably heavy drug usage. Someone who regularly particpates in a ragefest apocolypse would laugh in the face of someone who said they were planning on 'raging.' That is considered totally pussy compared to ragefest apocolypse.
Like saying to your friend: "Dude, when we go to Vegas this weekend it's going to be a fucking ragefest apocolypse."
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?"