The Back Door Sneak

1) A devious ploy, which involves trickery and the element of surprise. (The most literal definition is inserting your P into a girls A instead of her V)
2) Any situation with your friends where you come from seemingly nowhere to surprise them
*similar concept to a back door cut in basketball... but with more real world application

jeez, i was gonna hook up with cait, had that shit all set up, and then u run the back door sneak on me?!?" "sorry bro, im sure she'll still fuck you too

The Back Door Sneak by premature_4life April 24, 2011

brown dog is barking at the back door

The Brown Dog is barking at the back door. i.e. to have a shit.

I'll be back in a minute, the brown dog is barking at the back door

brown dog is barking at the back door by mickotoole November 7, 2005

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

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.

I'm gonna cum to your house and knock knock on the back door by Dr. Dirty October 9, 2008

Wolf nibbling at the back door

A sweating and itching condition caused by walking fast on hot days or by engaging in any other physical activity that makes your ring sting. Excessive pounding on the missus' rusty sheriffs badge with the wolf having recently nibbled at her back door may cause bleeding and discomfort.

Sharron: Fucken hell Shane, you've been hanging outta my ring all night and now there's a Wolf nibbling at the back door.

Shane: Sorry love, I was drunk. Tell him to piss off.

Wolf nibbling at the back door by Dr Chopstick November 5, 2006

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.

knocking on the back door by Zeeky H. Bomb March 19, 2005

through the back door 

"Through the back door" means having anal sex.

My girlfriend loves me so much, she lets me fuck her through the back door.

through the back door by Luke Chandler April 3, 2005