The art of tucking an erect penis, after placing it pointing upwards on one's belly, under the waistband of a trouser or pyjama. Something guys often do to hide a narb in a public place. This stunt must only be performed if the erection is greater than 60% and one is not topless. Usually performed in shared dorm after waking up or at your in-laws house.
Samantha: Hey, Mark! Come join us, we are watching the Other Woman!! It's so fun! Kate Upton is looking so gorgeous in it!!
Mark: Can't ! I have to pick up some stuff for the office party tomorrow. Andy, are you coming?
Andy: Ok, man! Just let me tuck my boy in first!
by abwolverine September 24, 2016
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