A bunch of pimples lined up on someones face that looks like the Himalayas. When someone has a mountain range means they probably sweat a lot during activities or don't shower at all.
Dude people might brag about climbing Mount Everest but they'll never climb that mountain range on Dustin's face.
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?"