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Tuck Undersex (-0.006)
The male act of tucking a penis behind his legs just below his ass. Often used by transvestite males to hide penis.
Watch out, that dude's no chick. He's just got a nasty tuck under and some nice fake tits.
by The Doctor February 14, 2005
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2
tuck undersex (-0.050)
The uncomfortable condition of having your balls and sometimes penis tucked under your inos. Often caused by poorly designed seats.
The seats at the MCC computer lab always give me a bad case of tuck under.
by Forrest Klump March 12, 2009
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