Flap bat

A flap bat is a woman with large vulva flaps that doesn't know how to shut them

Charlotte is a flap bat, she's apparently been with half of the town

Flap bat by Markbabi March 21, 2017

bat flap

Pulling your scrotum (nut sack) wide apart to expose the veins through light. To make it appear as a bat's wing.

My girlfriend came out of the shower to be exposed to a Bat Flap waiting in eagerness to be licked!

bat flap by HerNextBaby'sFather February 21, 2013

Batty flap 

Batty means bum and flap usually means the cheeks. Its an urban British slang and for some strange reason others have gotten a different meaning of it. Like how the word faggot which is actually a name for a type of food some how got converted into a nasty insult towards homosexuals by people. Usually it is just used because its funny and more polite than saying arse cheeks.

I will shove that up your batty in a minute. Explanation: I will shove that up your ass - Used when somebody is annoying you with something.
My batty flaps are flapping because I just farted. Explanation: My bum cheeks are shaking from my farting.

Batty flap by Flapping Batty January 24, 2016

Batty flap 

The flap that surrounds the female genitals,also used as an insult to a minor orlesser being

I corressed my female friends batty flap, thy friend of mine

Batty flap by Chris Burgess November 15, 2004