Top definition
(Verb) the act of gliding your clenched, lubricated knuckles acrossed a clitoris as an act of sexual stimulation.
"Did you fuck that girl the other night?"

"Yeah, I gave her the ol' greaseknuckle. She deserved it."

foreplay fist clitoris sex
by Sonny Sweetcheeks April 12, 2016
Get the mug
Get a greaseknuckle mug for your fish Yasemin.