To move the penis while erect under the belt or waist to hide the erection. In most cases done to avoid embarrassment.
Good thing Tyna doesnt go to my school, or else i would have to do the Northern Tuck more often.
by Eugene F. December 19, 2005
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Tucking the northern pointing erect penis under the waistband.
Timmy had to do the Northern Tuck while slow dancing with Jessica.
by Haus K February 19, 2017
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