A moose knuckle is equivalent to a camel toe on a woman, only on a man. It is when a mans testicles are pulled up tight and/or high and separated by the seam in their pants causing the appearance similar to a moose knuckle. Called thus because larger than sister equivalent the camel toe
For the love of god man get something to control that moose knuckle you got on you!
by Ansoberry November 04, 2010