Shartkin

The act of finding a suspicious napkin next to dumpster that has a 1 in a billion chance of being used as an anal wipeage utencil by an anonymous homeless man/woman.

Nathan: dooOooOOD! I touched a napkin and I think it had a gray/green/blue/orange/pink/dark brown/black stain on it around midnight so I couldn't fucking see anyway but It's probably going to get on my carpet then my floor and steering wheel and kill me.
Wheece: Well that sounds like a SHARTKIN my friend.
Tyler: Let me smell it to make sure.

Bang Sack

A rogue walmart bag floating around the parking lot that a lonely freak stumbles upon and mangles it into a practically non-existent jizz dumpster. Very practical and quite useful as a bartering chip at local pawn shops.

Nathyam: I really want that buttplug you got behind the counter but all I have is this BANG SACK
Tyler: I've never seen a finer piece of merchandise in my life, you got any more?
Wheep: WOW! how neat, I'll have to find me one of those beauties.