in the back door 

In the doggy style position, to act like you're going to stick your dick in the pussy but you stick it in the ass instead.

I bent that bitch over, she thought I was going in the pussy and then BOOM, I went in the back door!

in the back door by ThatMotherfucker December 16, 2014

kick in the back door

to be penetrated rectally, generally by a penis.
Being buggered.

He is so hot i'd give him a kick in the back door

kick in the back door by master luke July 10, 2006

braking in the back door 

This is bum sex. Either for man or women, depending on preference.

(kick) i'm braking in the back door!

braking in the back door by definor December 7, 2006

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!"

knock the back door in and put the extension up by TC Raymond August 15, 2005

kick the back door in 

During sexual activity. A term relating to taking a lady up the back passage.

Kick the back door in:
'Have you kicked michelle's back door in yet?'

'Things got a little frisky las night and i ended up kicking her back door in!'

kick the back door in by Beans57 November 7, 2006

kick the back door in 

to park your pink vehicle in her brown garage (with force)

I flipped her over and kicked the back door in!!

kick the back door in by G August 4, 2003

in and out through the back door 

in and out through the back door is the way a guy fucks another dude in his asshole.

I was asleep, but Matt went in and out through the back door anyway!

in and out through the back door by USAF Cadet July 25, 2021