A condition in which your buttocks and other nearby regions get overly moist often causing discomfort resembling the feeling of not wiping your ass. This happens typically when working in intense heat, during masturbation, refusing to wipe, and some other isolated situations. Also, this condition leads to a not so pleasant stench often leaving you extremely self-conscious if the situation cannot be remedied immediately.
Bryce-"Why were you walkin' all funny today when you came into work?"

Slade-"I'd been outside waiting on the bus and got swamp ass."

Bryce-"Word?"

Slade-"Word. I had to go to the bathroom and handle it quick before that fine ass new girl saw me or else she'd think I'm dirty."
by TheTruth778800 July 8, 2010
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WHEN ONE'S ASS SWEATS UNCONTROLLABLY AND THAT SWEAT BEGINS TO SOAK THROUGH THEIR UNDERWEAR AND PANTS.
I HAD TO WAIT IN THE DRIVE THRU WITH NO A/C AND HAD THE WORST CASE OF SWAMP ASS EVER.
by BIGSKINNY July 14, 2008
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A build up of sweat and schmancter usually forming on the under carriage in the crease between the berry bag and the inner thigh. After aging, "swamp ass" can put out a distinct and distasteful odor. Swamp ass is caused by extended periods of physical activity. Obesity can contribute to the severity.
After several hours of worm wrestling and sword fighting, Jason and Eric both had terrible cases of swamp ass.
by Jason Belanger December 8, 2003
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A moment of intense anal, rectal, and butthole sweating that in turn begins to coagulate around the almighty crack giving the sensation that your rectal cavity is actually engulfed in swamp-like environments.
"BRO TONY THAT FUCKING LASAGNA IS DAMN NEAR GIVING ME SWAMP ASS JUST FUCKING LOOKING AT IT"
"Calm down Giovani them cheeks are beginning to drip."
by juckerafison February 1, 2020
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The wet sweaty backside ( or undercarrage )that a man possibly doing construction work might get . Particularly in the Southern half of the U.S. in the Summer time .
Perhaps resulting in chafing .
MAN ! I`m glad it`s quittin` time ..Ive got a bad case of swamp ass !Bring on the Gold Bond .
by R_W February 16, 2008
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when your ass gets so sweaty, there is so much sweat it gets a little soapy, and your ass is drenched in sweat and your ass cheeks might even be pruned
you could be sitting at a baseball game, just chillin with your friends, its a little humid you notice, suddenly you have to go to the bathroom, you stand up and your friends, family, girlfriend or boyfriend sees that your ass has two wet spots near the crack, one might say you have swamp ass or just imply that they are scared an alligator from your assmarsh might attack them
by themotherfuckingshit April 28, 2009
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An unfortunate condition that results in extreme discomfort to ones anal opening. This condition is usually brought on by excessive perspiration, excessive friction / movement and incomplete anal paper work. Can also be brought on by liquid or solid content flatulence and excessive bowel movements.
A runner with diarrhea will experience swamp ass on warm summer days.
by mtbikerbob August 15, 2006
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