by Joe Jenco a.k.a Sir Flap Jack October 25, 2007
 Get the flap jackmug.
Get the flap jackmug. breasts that are unatractive in any way, be they saggy, miscolored, wrinkled, or pancake like in nature.
by HL Deez February 17, 2005
 Get the flap jacksmug.
Get the flap jacksmug. by Chucksama November 14, 2013
 Get the Flap jackingmug.
Get the Flap jackingmug. by Leon June 20, 2004
 Get the Flap Jacksmug.
Get the Flap Jacksmug. Describes two body parts in particular on the femal body. Volumeless saggy breast which resemble the pancake like flat bread called flap jacks.
Also describes a flat ass
Also describes a flat ass
by kumquat87 October 19, 2009
 Get the flap Jacksmug.
Get the flap Jacksmug. by Sambooshawan May 13, 2009
 Get the Flap Jackmug.
Get the Flap Jackmug. by A. Hermann  February 9, 2007
 Get the flap jackedmug.
Get the flap jackedmug.