The male version of "camel toe". Where said male's pants are so tight and/or transparent, the shape/details of their anatomy are clearly visible even through the garment, resembling the appearance of a moose's lower ankle (or "knuckle").
"When I watched wrestling last night, that tag team had on spandex shorts SO tight, they were sporting some SERIOUS moose knuckle!!!"
by CactusHeart December 3, 2009

by Rouge and Knuckles Fan February 2, 2004

A fish knuckle is when a woman masturbates vigorously to the point that her "natural" feminine odors now permeate directly off of her knuckles.
After 2 hours of abusing her pussy to pictures of The Rock, it appears as if Cindy is now suffering from fish knuckle.
Big lipped Jamal wasnt sure if Shaniqua ate catfish for lunch or had the fishknuckle.
Big lipped Jamal wasnt sure if Shaniqua ate catfish for lunch or had the fishknuckle.
by Wrestling SOup December 4, 2012

by bottleblonde September 8, 2005

Wow it's cold out, I can barely see my dick, it must be knuckling up.
I don't have a micropenis, it's just knuckling up!
I don't have a micropenis, it's just knuckling up!
by Nasbaby December 17, 2010

Shit me mate......he stuck his toe right up to my tonsils - the dirty low down foot knuckling son of a bitch
by Burtonez September 12, 2009

"There were 3 or 4 guys that had me backed into a corner so I had to go the knuckles to get out of there"
by NSP81 May 6, 2007
