The act of taking a shit with the bathroom door open, performed by a female.
"bro where's Sarah? "
"Oh she's just taking an open-door Lassie"
The illegal practice of sneaking candy in to a movie theater through the back door.
Friend 1: Hey, I'm going to the movies but I only have enough money for one ticket. I'd really love some candy to enjoy it with.
Friend 2: Oh, man, no problem. We'll just pull the old Back-Door Candy.
Friend 1: Sweet!
What you get when you try to do what Dr. Frankenstein did by making a boy next door out of an asshole.
She tried to take the more favorable traits/parts of guys that she actually liked and combine them with the disgusting and grotesque traits/parts of the guy she was operating on to make him more like a boy next door, but instead ended up getting an asshole next door.
It's the name of a sushi restraunt ...you sick perverts
I am in the mood for some back door sushi!
When a man's penis migrates from one side to the other, but turn falls thru the opening in the front of his underwear. Resulting in a trap that needs to be adjusted for comfort.
When I was insert activity I caught trap door syndrome mid stride, and was trouser trapped. Luckily the one leg shuffle sorted it out.
When two people have intercourse against a British door.
As we left the pub, we caught Emily catching a British door nail.