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1.
Unpleasant, often painful condition incurred when a man accidentally gets one testicle caught in his belt buckle.
Tim rocked an ill testicular torsion from his buckle nut.
by Rash Kendar January 30, 2009
 
2.
1. A polite way of saying "Dumbass" 2. A term of endearment that is depreciative but in a nice way.
1. "Get out of the fastlane, bucklenut!" 2. "C'mon, bucklenut, it's time to go to bed."
by Hepcat December 21, 2004