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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 07, 2010
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9
An ass that has been sweating due to extreme heat and has hit the perfect ripeness.
Dude, it is so humid that I am brewing some swamp ass right now.
by Lil Buhda March 28, 2008
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10
the nasty feeling when your butt crack is sweaty, causing your underwear and pants to stick, or an occasional itching feeling. Ussually caused by elevated tempatures or humidity while working or excessive walking.
Ryan's been walking around in this heat all day and now he complains of haveing a bad case of swampass.
by KRaZY Kristen September 03, 2005
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11
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 08, 2003
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13
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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14
A state of being after general uncleanliness leading to so much sweat that one's lower region could possibly produce the vegetation and smell of a swamp.
Man that dude Edward Malone has swamp-ass, I heard he doesn't shower in weeks.
by DJBigD February 23, 2012
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