Someone who will have sex with anyone.
Damn, look at that girl he's with... He's a total Knuckle Sacker!!! She's hideous!
When an adult is so overweight or obese they have dimples where their knuckles should be protruding much like a chubby infant.
Yo mama is so fat she has baby knuckles!
"Helen has really put on the beef" "Yeah, she has developed a really nice set of baby knuckles"
A girl who that you are doing stuff with, but have not quite decided whether shes going to be main biddy or not.
Johnny: You dating that girl yet?
Mikey: Nah man, shes still just my knuckle puppet
Performing the art of masturbation whilst showering and finding a pair of seamen based salty sea slugs on your knuckles.
"Jeez Mark you had a long shower this morning, are you sure you weren't rubbing out a couple of knuckle slugs?"
another term for a black person or a nigger
"where did all of your beer come from"
"my knuckle crawler friend reggie dropped it off at the window"
A Ugandan Knuckles explains that he wants to show you de wae.
"Do you know de wae?" said Ugandan Knuckles
noun, an african-american, typically someone who drags their knuckles on the ground while walking. some may even call that an ape or a spook.
That Knuckle Dragon stole my lunch money and played dice with other knuckle dragons in the restroom.