knuckle sack

A tight sack with defined hemispheres male camel toe.

Roger came out of Bellagio's pool sporting a small Knuckle Sack

by Ms. Vegas May 26, 2016

Sack Knuckle

When a man is wearing tight pants and the crotch seperates his testicles showing a bulge on each side of the seam.

Look at that guy, his pants are so tight I can see his sack Knuckle.

by Otis The Duke January 26, 2009