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1.
A camel toe for men.
Aww hellz no. That hottie o`er there gotta bull-knuckle.
by MICHELLE April 07, 2005

Words related to bull-knuckle

camel toe
 
2.
The exess skin on a vagina
She had so much bullknuckle, it looked like she shoved toilet paper down there.
by K-lo December 31, 2003