STFU
The English acronym for shut the fuck up. It is used to tell someone to shut their mouth in a derogatory or dismissive way (common in Spain among younger people and in internet culture).
Guy A: You just contradicted yourself. Again. Guy B: Fatty. Guy A: I see, you do not even know how to insult, loser. Guy B: stfu Guy C: Admit you lost, Guy B.
Automatically translated from Spanish
España