Shutup, a cleaner version of STFU (Shut the fuck up)
<Hex> I had such a dirty shit just now!
<Terran-Ghost> SU, for the love of god SU!
"Marge: I don't want you stalking anyone tonight.
Homer: Oh, OK, have it your own way, Marge. I'll be back in a minute I'm... going outside. To... stalk ...Lenny and Carl. D'oh!"