Top Definition
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.
מאת LynchingNemo 22 בינואר, 2008
When an arse is so emmense that the cheeks turn into flaps. Can be used as a negative term.

Jeff: Damn that girls so huge shes got bumflaps!


Jim: you missed the strippers and free beer.
Pete: oh bumflaps.
מאת DazCorp 28 בפברואר, 2005
The flaps inside your anus.
Dude uve got the biggest bum flaps ever!

Awww bamflaps i forgot my phone
מאת GemmaDude 7 בנובמבר, 2007
It's underwear. Is there anything else to know?
I lost my bumflap, where could it be!
מאת He who likes Bukkake 2 בפברואר, 2005
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!"
מאת iloveumore+more+more 12 באפריל, 2006

דוא"ל יומי חינם

הקלידו את כתובת האימייל שלכם למטה כדי לקבל בחינם את מילת היום של המילון האורבני כל בוקר!

אימיילים נשלחים מהכתובת לעולם לא נשלח לכם דואר זבל.