What is Knubbin?
1.
Knubbin (pron NUB - IN)
The bump formed in your fly while sitting down caused by your zipper. Sitting down causes looseness in the material surrounding the fly and the less flexible zipper, velcro, button, etc, forms into a funny shaped lump.
Ted: Hey look, Fred's got a boner! Haha!
Fred: Na way man, it's a knubbin
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Random Words:
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Someone who abuses Urban Dictionary by using it to post about people they dislike when it means nothing to anybody else but themselves.
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