nigger knuckles 

Racist term for Brazil nuts

My favorite nuts are almonds, but I don't like the nigger knuckles.

nigger knuckles by Steph X March 19, 2007

NiggerKnuckle 

The finger specifically used for anal penetration during sex.

"Give her the old NiggerKnuckle last night?"

"So then I gave her the NiggerKnuckle and she screamed."

NiggerKnuckle by Dedsexidaddi September 7, 2013