Combination word Gnarly (as a negative connotation) and Garbage. Can be used in place of the actual word garbage. Or it can be used to describe unsavory things or situations.
“This party is gnarbage.”
"I'm taking out the gnarbage."
"He's a gnarbage collector."
When cleaning out the bathroom at work this morning, there was some straight gnarage in the toilet and on the wall. Suprised there wasn't an organ in the toilet or dude didn't pass out...there was a lot of blood
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.