That moment when you wake up, usually hanging from a night on the lash, to sunshine and a foot of fresh pow, causing you to violently jizz in your pants.
This can also occur when watching skiporn, before you shred a line, whilst shredding a line or when you see an absolutely bangtastic female skier.
Skier #1: Mate, look out the window, it's fucking fantastic
Skier #2: Oh my fucking god...I'm pretty sure I just had a skigasm
Skier #1: Let's go shred that shit
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?"