The abbr. of SHUT THE FUCK UP PLEASE. This is commonly used when used by a polite and very angry goody goody who cannot forget their manners, and involuntarily and accidentally adds please.
Ashley: lalalala
Jessica: STFU
Ashley: don't you mean STFUP?
Jessica: the hell is STFUP? STFUP?
Ashley: it means shut the fuck up please. jeez
Jessica: dork
Jessica: STFU
Ashley: don't you mean STFUP?
Jessica: the hell is STFUP? STFUP?
Ashley: it means shut the fuck up please. jeez
Jessica: dork
by immaSYAUD June 28, 2009
It means "shut the fuck up"
by darcanjosf March 23, 2021