Five Knuckle Plug

Achieving a full hand fisting of your partner's anus of or vagina. Requires patience and lots of lube and very pleasurable gaping.

It took over an hour but I finally did the Five Knuckle Plug on her ass. That baby gaped for 10 minutes before it snapped back shut.

by Eaton Holgoode March 29, 2017

peanut butter knuckle fuck

When another person, or animal, licks peanut butter off your balls while you jerk off.

Man, my girl gave me a peanut butter knuckle fuck last night.

by Britt Charnock March 6, 2017

ten-knuckle buckle

A slang term used to describe the act of double fisting.

I'm still sore from last night. your mom pulled out the ten-knuckle buckle on my ass!

by tamara p.s. October 28, 2007

German Knuckle Cake

German Knuckle Cake (noun) A slang term for fisting someone is the ass.

Her asshole was so big I could have fit a German knuckle cake in there.

by Pox March 23, 2006

knucklehead

A dunce. A dummy. A very stubborn person or animal.

I told him how to do it, but he would not listen, the knucklehead!

by Merrily McCarthy July 17, 2003

knuckle rubber

Originated in the Florida Keys, 40's era, the act of rubbing another mans knuckles in a signal of homosexuality.
A homosexual male. Homosexual behavior, that in which a homosexual male beckons another.

Person 1: "look at those guys".

Person 2: "Damn knuckle rubbers".

by Recluse September 30, 2004

Knucklin

A more aggressive version of fisting that results in g-spot or prostate contusions.

"Yo, bra, why's your hand in a cast?"
"I broke it knucklin' your mom last night."

-or-

"Why are you walking so messed up, were you riding a horse?"
"Naw man, I spent last night getting knuckled by 8 dudes and now my ass is broken like Angel's face from Fight Club."

by n@sty n8 d0gg January 23, 2009