an acronym that stands for "sarcasm is to be sensed." used at the end of a text message to denote sarcasm, as it can be difficult to tell at times.
Really? I thought you liked working double shifts. sitbs
by sneakyweasel56 April 28, 2011
S.I.T.B means: Sex In the Biatch
oo he is definatly getting some S.I.T.B
it is also the name of a shot
by Mr.Chad October 05, 2006

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