term used to describe a woman who has loose morals in the sex department, has put out so much that theres no tread left on the tyres.
i was doin this chick last night, she had slack flaps.
her flaps were so slack it was like feeding a kitkat to a whale.
her flaps were so slack it was like feeding a kitkat to a whale.
by paddy donnelly September 10, 2006
 Get the slack flapsmug.
Get the slack flapsmug. by Tony S. June 18, 2004
 Get the flesh flapmug.
Get the flesh flapmug. noun.  A thick, cheese like, sebaceous sediment that gathers in the deep unwashed crevice found between the folds of an obese person's skin.
by Harold Chimkowski August 29, 2006
 Get the flap cheesemug.
Get the flap cheesemug. A condition where a girl has a pussy so loose you can fit a damn watermelon in it. It also usually smells of dead fish and generally has lips that sag out of her pants.
by BDJ8961 January 10, 2013
 Get the The Flapmug.
Get the The Flapmug. by A. Hermann  February 9, 2007
 Get the flap jackedmug.
Get the flap jackedmug. by Kizzle82 May 28, 2007
 Get the twat flapmug.
Get the twat flapmug. by choda4u2 March 12, 2011
 Get the lab flapsmug.
Get the lab flapsmug.