Similar to cleft lip, flapped ass is a chronic condition in which either of the two glutei maximi (buttcheeks) recedes to form a significant gap, aside from the gluteal cleft (buttcrack).
1. "1 in 3 children have been diagnosed with flapped ass. For 15 cents you can save a child's ability to sit in a non-tilted position."
-"ROFL"

2. "Yo why is my right butt cheek so much bigger than the other?"

- "HA YOU HAVE FLAPPED ASS"
by thatoneguywhosaysstuff February 23, 2011
Get the Flapped Ass neck gaiter and mug.
A woman in a bathing suit who has an extra flap of skin over her ass. It is most disturbing when she bends over. No one knows how it got there, but there it is, a flap of skin right over her ass.
John: Did you see that woman's ass?
Sara: Holy cow, she has a flap ass.
by Holycrapthisisawesome June 20, 2007
Get a flap ass mug for your barber Rihanna.
1. Shear extreme surprise.

2. The flapping of a holy ones ass cheeks, such as the pope.

3. When something so crazy happens that Jesus applauds you with his ass cheeks.
-A ass ninja flys out of nowhere briefly and then disappears into the shadows.-

Justin: Holy flapping ass cheeks! Did you see that ass ninja!

Matt: ....... -Slaps Justin for shear stupidity and then quickly disappears just like the ass ninja-

Justin: -After realizing that Matt was the ass ninja- Holy flapping ass cheeks!
by Mirthmanx December 15, 2010
Get a Holy Flapping Ass Cheeks! mug for your guy Abdul.
A hole located in the backside of the boxers of an individual who puts his/her boxers on backwards
*group enters hot tub*

Friend 1: "Look at this clown! He put his boxers on backwards!"
Friend 2: "Would'ya look at that! I've got an ass flap!"
by OTJdog March 26, 2017
Get a Ass Flap mug for your bunkmate José.
When a rogue bit of toilet roll gets stuck to your sphincter during wiping.
It was a textbook turd until I snagged an ass flap.
by TedZeppelin March 02, 2007
Get a Ass flap mug for your bunkmate Larisa.
1. the small growth of skin that occassionally covers the anus of newborn children. Such growth is customarily removed and discarded. 2. someone who is disgustingly useless.
"Get off the couch and take out the garbage you ass flap!"
by 1911a1 July 06, 2006
Get a Ass flap mug for your sister-in-law Beatrix.
A tag of skin on the anus sometimes left behind by a resolved ass-grape.
Her ass-flap was a sign that she was predisposed to ass-grapes, but I sodomized her anyway.
by UberCyberBeast July 10, 2008
Get the Ass-flap neck gaiter and mug.