very similar to "shut the fuck up" but is said in more of a blurting out, just cant take it anymore, fit of rage fashion. It is more a use of sounds vs words.

Pronounced with subtlety, and under your breath as a single word..

sh-t-th-f-ck-up.. but quickly.

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