a Portmanteau of the wordsChillin + Relaxing + Procrastinating. A favorite at many college campuses on weekdays.
Dude 1: Did you do that physics homeboy dawg?
Dude 2: Na Na foo, I be straight chillaxinatin
Dude 1: Man, you're such a slacker.
Dude 2: Mayne, you're such a fag.
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?"