I began to use Shup a while ago, without realising its a pretty old term. But at the same time (before I knew of the popularity of shup) I made I shuffup.

short for shut the fuck up. shu(t the)f(uck)up

-Ash

(noun) A successful type of theft which results in an acceptable, impressive and rewarding payday for the protagonist.

Meaning to shut your fucking mouth because you don't deserve to talk because your a fucking bitch that doesn't have a live because they keep talking like a ho.