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Acronym for "laughing out fuck shut the fuck up." This is a contraction of lofl with stfu and is meant to express incredulity and amusement while sounding totally ridiculous.
Tay: I just leveled 10 times in the past hour in WOW and I have like 50k armor!
Lo: lofstfu!
by lofstfuer December 29, 2004
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