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Male testicles. Can also be used in the same sense as bubblegum if you are so inclined.

While the word is derived from camel toe, it is incorrect to say that a wolf knuckle is the male equivalent of a camel toe.
It is always advisable to trim your wolf knuckle if you want to get teabagged.

While men know most of the basics of proper hygiene, we often fail to keep a trim wolf knuckle, much to the chagrin of women around the world.
by John Amechi July 24, 2005
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