Knucklebomb 

Anal Fisting

Sebastian could really feel Tristan's fist in his ass. As he came, he thought this was the best knucklebomb he ever had.

Knucklebomb by Fnspidey August 31, 2017

knucklebumped a floater 

when one's aggressive ass-wiping causes him or her to forcefully strike the chocolaty log within the toilet bowl.

i was taking a behemoth dump on my break before i looked at my phone and saw that i had only one minute 'til punch in time. i was wiping so aggressively/quickly that i, accidentally, knucklebumped a floater.

knucklebumped a floater by todd beanfeather February 24, 2009

Knucklebob 

Fingering your bootyhole or the bootyhole of another with your middle finger up to the third knuckle.

Beth was squirming last night when I did a little knucklebob.

I can’t shit today. I knucklebobbed myself last night.

Knucklebob by Eaton Holgoode October 6, 2017

knucklebabies 

n. knucklebabies is the outcome a male gets after he roughs up his suspect (masterbates) and dosent release his sperm into a sock or something and it is all over the back of his hand.

I got home late lastnight and my wife was asleep,so i went to the computer and racked out a batch of knucklebabies.

knucklebabies by richard bellamy March 8, 2008

knucklebabies 

Sperm or semen, especially when induced by masturbation.

"Yo Scooter, what's up with your petrified Kleenex?"

"It's nothin' dude, just my knucklebabies from rubbing one out earlier today."

knucklebabies by dandruffy August 16, 2008

knuckle bomb 

shitting in a girls sauce pan and living it on simmer because she wont drive you home after having sex with her

Steve left with some chick last night who refused to drive him home after having sex so once she passed out he knuckle bombed her and walked home

knuckle bomb by B.C.051 March 13, 2010

knucklebone 

Another word for fisting

Jeff: Maria has let every guy in our grade knucklebone her

George: What a slut

knucklebone by LeManssssssss3 October 15, 2014