by Marginallyclean July 12, 2016
A piece of cloth attached to the back of your pants or jacket covering the lower portion of your back. Usually screen printed with punk rock logos, insignias, and covered with conical or pyramid studs. Worn by punk rockers of all kinds. Extra bonus points are rewarded if your butt-flap attaches to a studded vest with pyramid or conical studs. The first known sighting of a butt-flap was as ABCNORIO in the lowe east side of New York city in 1989, although it is suspected to have originated in London at an earlier date.
by nahthan November 11, 2005
A square piece of cloth (usually advertising a punk band) that is safety pinned to the back of a dirty, smelly, gutter punk kids pants. Similar to a trucks mud flaps and a loin cloth.
by special j September 9, 2007
when a skanky girl takes way to many cocks into her ass her ass becomes flappy there for givin her some butt flaps
by Insert It July 12, 2006
when obesity causes rolls to protrude from the buttocks, causing a sort of 'flap' that at time may sway to and fro.
by buttflapexpert June 7, 2006
When a person's butt is so flabby that it hangs low to create a curtain of flabby butt. Otherwise known as a butt curtain.
Trisha: That gurl does not have the bod to pull of those bootay shortz.
Dee-bop: Tell me about it! I can see her butt flap from here!
Dee-bop: Tell me about it! I can see her butt flap from here!
by Buttl0af June 27, 2013
by Pandaran January 23, 2007