1 definition by SomeRandomLettersAreASDKLJFLKD

An internet slang term meaning laughing but super furious.
I forgot my homework at home, lbsf.
I tried a lame pick up line on the girl I like and it didn't work, lbsf.
by SomeRandomLettersAreASDKLJFLKD December 22, 2012
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