Pating is short for a pathetic person. The term was first used in the suburbs of Oslo and is now a widely used term. It's not quite as offensive as actually telling someone that they're a pathetic person, and is commonly used among friends when they do something stupid or short-minded. Pating may be shortened with a simple "P".
Example one:
To friends are walking down the street when suddenly one of them trips in his own laces.
Friend 1: Haha, you're such a pating!
Friend 2: Gaaaah, I know... I'm nothing more than a P...
Example 2:
You're walking down the street and suddenly see a dude with his pants stuffed in his tennissocks.
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?"