cheek flapper 

To expell gas from one's anus with such force that both sides of his/her buttox slap together to create a distinctly audible, and occasionally painful, vibration.

During the awkward silence on his date, John let forth such an intense cheek flapper that the silverware on the table rattled.

cheek flapper by Shpoiken April 28, 2005

Beef Flapper 

A woman's flap of her vagina that looks like a piece of shaved beef

Wow, heidi had a real crazy looking pair of beef flappers.

Beef Flapper by Dirty Bizzle February 20, 2009

Fanny Flapper 

Another word for a woman who sleeps around.

(Flap thier Fanny)

•She's just another Fanny Flapper, you deserve better than that.

•make sure she ain't no Fanny Flapper before you go for her, Son.

Fanny Flapper by Frank Fisterton February 21, 2018

Bingo Flapper 

Under arm flab, or fat. When older women win during Bingo games, they throw their hands in the air saying "I got a bingo!!!", flapping their arms (and underarms) wildly about in their excitement. Thus causing the wind movement from their "bingo flappers" to eradicate all other bingo players, bingo cards. Game, Set, Match.

" How do I get rid of these Bingo Flappers under my arms?"

" That girl has some serious Bingo Flapping going on over there".

"My god honey, Kristie alley has huge bingo flappers. She must be able to fly around the world!"

Bingo Flapper by Ironsoulx August 5, 2009

shit flapper

A dried piece of dog shit that accumulates on near the ass of a dog. The shit flapper will open and close as the dog has to fart, or take an additional shit, much like the cover on the smokestack of a diesel truck.

I've got to cut the shit flapper off my dogs ass, it's starting to crumble onto the floor.

shit flapper by Johnlange January 13, 2017

Dog flapper 

A cross between (69) and doggy style...

Cristina: George

Cristina: George and I had dog flapper last night.
Evan: I know I heard you.

Dog flapper by Noncy steve September 29, 2019

Auto-flapper 

A woman who unknowingly gets her dress caught in the car door and proceeds on – her garment flapping in the wind.

“Hey, check-out the auto-flapper in the car beside us. I wonder if we should honk and point.”

Auto-flapper by Johntoo September 5, 2009