A layer of buttery cheese commonly found on a sorostitute's back, just above her waist that usually shows signs of dunlap disease and may or may not be accompanied by a large stripper tattoo. This type of fatback is mostly caused from drinking beer and eating large pizzas all by themselves. Possibly a major portion of their freshman fifteen.
by JRatt June 17, 2005
A referal of a females backside or booty, appealing to the opposite sex, which is man. (No Males should have a fatback. Females are strickly forbidden to use this world unless your gay).
by neiman July 06, 2004
by gimmi mora head February 18, 2007
A girl who is rather heavy, yet not totally obese, in a fairly sexy way. It is a common term of endearment for the larger girls, who are not fat, but sexy.
by FatBackLover March 19, 2009
by Mr Melon May 23, 2005
A person with a giant back, but an incredibly small penis. To make up for insecurities resulting from a case of babydick, a fat back will overcompensate and take advantage of any oppurtunity to brag about his or her hugeness, back or otherwise.
When everyone started talking about their penises, Mike the Fat Back quickly changed the conversation: "I'm the only one who can get this tattoo 'cause my back's so big"
by xchgsjhkd November 24, 2010
by loure August 22, 2008