A fat man's hairy ass. The Swamp is usually not washed for days and therefore has a "swampy" reference when described. depending on how long it has been since the fat man has washed his swamp, there may be forms of life adapting to their new "swampy" environment. One does not have to neccesarily be fat to adapt a swamp, but the extra fat and ass space will allow for more wilderness to grow upon ones anal environment. Caution: the swamp may become thicker and much harder to navigate as one becomes closer to the anal cavity or around the Gooch area.
by KFCZombie July 13, 2008
A common description of the weather in Southern Georgia, particularly Valdosta, in the American South, in the southeastern United States
My brother was explaining the humidity in Valdosta, Georgia and said "'Have you ever heard of 'swamp ass'?
by 88mphsss July 29, 2011
by TortillaLover August 02, 2015
When the crack off someones butt becomes so sweaty do to strenuous physical activity. Usually takes place in humid areas.
by kronickilla October 06, 2010
When the area bettween your buttcheecks, commonly reffered to as the butt crack, becomes sweaty and stinky.
by brit_legit February 04, 2010
by hallnut914 September 02, 2010
by Matt September 25, 2003