knocking on the back door

During anal sex, the person that is doing the penetrating and thrusting is the one that is doing the "knocking," and the anal opening is, obviously, referred to as the "back door."

When Eric and Amy are in bed, he's always knocking at the back door.

by Zeeky H. Bomb March 20, 2005

Knock on the door like the damn police

Excessively knocking or pounding on someone's door.

Stop knocking on the door, like you are the damn police!!!!!!!! I know you want to get in here.

by Saints February 5, 2005

knocking on the back door

n. when a man attempts anal sex without requesting verbal permission. Often involves either precursory acts such as foreplay (rimming, anal fingering) or preceding acts (spreading of ass checks, tapping head of penis on anus, pushing the tip of the penis onto the orifice without full insertion) to signal one's attempt at anal intercourse.

After doing it doggystyle with Jackie, I started knocking on the back door. She didn't object so I totally stuck it in her butt until she screamed.

Richard Johnson kept knocking on the backdoor last night in bed, but I told him to stop since I barely know him.

by calisp July 2, 2013

knock knock knocking on every door

when you go around knocking on every door you can find and when you open it you have to say

Knock-knock-knockin' on heaven's door
Knock-knock-knockin' on heaven's door
Knock-knock-knockin' on heaven's door
Knock-knock-knockin' on heaven's door, eh yeah

WOW you knock knock knocking on every door

by myrealnameisjeffandpeopleyas November 15, 2017

knock the back door in and put the extension up

Polite euphemism for anal sex, just crying out to be written into an updated Carry On film based around DIY enthusiasts.

Jack Douglas : "I'll be finished as soon as I've knocked her back door in and put me extension up"
Sid James : "Hwar har har!"

by TC Raymond July 21, 2005

Knock Knock Open Up The Door It's Bork

Bork's name added to DMX's song "X Gon' Give It To Ya"

Knock knock open up the door it's BORK!

by Borkems91 April 7, 2010

I'm gonna cum to your house and knock knock on the back door

A dirty way of saying surprise butt-sex.

1.Waffles: Hey Dwarfo, I'm gonna cum to your house and knock knock on the back door. If you don't answer, I'm gonna bang bang!

Dwarfo: Yeep! I hope it isn't too surprise!

2. What rapists say to little kids when they are gonna butt-rape them.

by Dr. Dirty August 15, 2008