Czubing involves being the biggest shit ass on planet earth. To qualify one must have no job, get excessively drunk on a daily basis, and be, aswell as feel like a big bag of poop. it can also be used to describe being super hungover afer a night of binge drinking
ME:Czub what the fuck are you doing with your life
Czub: Nothing man im Czubing.
Also
ME: Dude i got so drunk last night, im Czubing hard bro.
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.