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A long abbreviation for shut the fuck up, what the fuck, oh my fucking gosh, rolling on floor laughing my ass off... aka the ultimate laugh.
Amber: STFUWTFOMFGROFLMAO!!! He just texted me back saying he wanted to buttfuck me!

Cathy: Oh wow... I REALLY didn't need to know that... but that's hilarious!!!
by Alex....... yea November 07, 2010
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