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Sharktoothing is when a woman is in the middle of a blowjob and bites down on a man's erect penis.
Doctor: So tell me, what caused your penis to bleed?

Patient: Well, I told my wife that we should try sharktoothing.

Linda: Hey, Bob, you want me to shark tooth you?

Bob: Are you fucking insane?
by I Burnt Toast July 17, 2016
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