knock off a slice

To have casual sex with

"I'd like to knock off a slice of that bitch!"

by Otiam Ness August 27, 2007

knocking on heavens door

When you are masturbating and you accidentally hit your testicles with your fist.

Guy 1:"Have you ever knocked on heavens door?"
Guy 2: "Dude, i accidentally went knocking on heavens door last night and i was in pain for hours".

by Robo0000222 March 2, 2017

Knocking a grant out

Code for stimulate one's genitals with one's hand for sexual pleasure

I'm going knocking a grant out

by S13rev February 5, 2023

knocking on the back door

Pressing the tip of one's erect penis against a woman's anus in the hope that she'll agree to anal sex. This technique is futile 99.753% of the time, but persists due to the collective male delusion that women secretly love to be invaded in this way.

Boyfriend: (knocking on the back door)

Girlfriend: How many times do I have to tell you??? Get that thing away from there!!!

by Carl Pinkerton May 16, 2009

Knock em dead

Do great, succeed, achieve above and beyond expectations

Johnny is nervous about his Recital.

"Knock em dead boy, you'll do great" his mom yelled from the car.

by Kotus May 21, 2011

Knock yourself out

A term for: Do whatever the hell you want, it doesn't bother me.

"dad, can i go to the park?"
"Can you get there yourself?"
"Yeah"
"well then, knock yourself out."

by donnald duck June 10, 2005

Cock Knocking Fuck

A man who is acting like a jerk or an ass as pertaining to how he treats women.

Did you hear about him? He got caught messing around on his girl. What a cock knocking fuck.

by Burned66 November 27, 2012