Swinging doors 

originated in the context of the expression "hotdog in a hallway".
refers to larger than average vaginal lips, or labia, and their subsequent movement on entering.

"I've got strong pull-out game, but these swinging doors nearly got me."

Swinging doors by Virtual Antiquity August 1, 2018

Swinging door. 

Another way to say you're bisexual. To be bisexual. To play for both sides. To date both men and women. To have sex with both men and women.

- "Is he gay?"
- "No, I think he's just a swinging door."
- "Excellent, I have a chance!"

Swinging door. by Cam Jam. August 25, 2009

swinging door 

A woman who enjoys both vaginal and anal sex.

Man, she's a swinging door - every exit is an entrance!!

swinging door by thedeusmachine August 1, 2011

Swinging Door 

When you’re having sex with your woman, and your balls are hanging by her “brown eye”, the woman then farts causing your balls to swing back like a door.

Bro, Selina totally gave me the “Swinging Door”!

Swinging Door by Kgizzel November 24, 2018