bum flaps 

The flaps inside your anus.

Dude uve got the biggest bum flaps ever!

Awww bamflaps i forgot my phone

bum flaps by GemmaDude November 29, 2007

bum flap

It is a piece of fabric about 13x13 hanging from the waist covering the butt (the front/sides)sometimes with d-rings, usually plaid or pinstripe, mostly worn by the punk community.

Girl 1: Woah, that bum flap goes great with his bondage pants

Girl 2: ... no bitch.

bum flap by LynchingNemo January 22, 2008

Clitty Bum Flap 

A piece of string that goes from the buttocks to the clit. It is nailed in both ends used as a fashion accessory.

Can I see your clitty bum flap?
Who nailed your clitty bum flap?
That's such a cool clitty bum flap!

Clitty Bum Flap by d0ugie29 August 17, 2016

bum flap

a bum flap is wen a girl has a really really short skirt, thats rolled over so many times, its like a really thick belt, and so instead of being a skirt .. is a bumflap! (you see the link...), i.e. nothings left to the imagination, especially on a windy day...bumflaps are very common in secondary schools with the *were not even gonna hide were desperate for a shag* kinda girls

"Oo Gladys look at that bum flap...the youth of today!"
"I dont know about that.. i quite like it!"

bum flap by iloveumore+more+more April 27, 2006

Bumflaps 

When an arse is so emmense that the cheeks turn into flaps. Can be used as a negative term.

Description

Jeff: Damn that girls so huge shes got bumflaps!

Negative

Jim: you missed the strippers and free beer.
Pete: oh bumflaps.

Bumflaps by DazCorp February 28, 2005