a very sweaty smelly ass
ben's swamp ass was so bad, he had to change his boxers 4 times in a single day. We replied, "holy shit, that's some swamp ass."
by dick head September 18, 2004
when your butthole leaks and is very wet
i hade such bad swamp ass cats followed me for a week
by couragewolf127 February 19, 2011
When after sitting on something for a long time while working up a sweat or working up a sweat in general your ass sweats to a rediculous amount to the point where your underwear/boxers stick to your ass. Often accompanied by a funny walk.
After playing handball in gym nate had very bad swamp ass.
Logan: nate why are your pants still down hurry up we can't be late to class
Anthony: I recon he has dat dar swamp ass
Nate: airing my ass out, feels good man
Logan: yup I got it too. Sucks
by CTU_FieldAgent200 December 08, 2009
The occurrence of taking a hot dump precisely after a shower. The bathroom is hot and humid thus creating a wet and sloppy experience. Common side effect includes sweating profusely

A post shower is typical

Swamp as may be experienced while going commando on a hot day, playing basketball, sitting in a sauna, swimming, or tanning
Man I have swamp ass!
Dude don't take a hot steaming dump after a shower!

I though I would cool down by going commando today, but it gave me a bad case of swamp ass.
by mlk34 April 01, 2010
When your ass is sweating to the degree it feels like your sitting in a swamp. Usually the inside of your butt cheeks are wet and or slimy
You may experience swamp ass after sitting down for an extensive period of time
by Master Baterr April 19, 2010
1. The warm, moist feeling of one's ass from sitting for an extended period of time.

Swamp ass, in association with lengthy road trips, is usually accompanied by the smell of stale french fries that fell into your crotch that you failed to notice.
joe: let's go to the bar and pick up chicks

jimmy: ok, but lets take your car, mine smells like total swamp ass.
by G-busey September 01, 2009
The unfortunate occurrence when one's ass gets sweaty, itchy and smelly usually after a low-quality dump or when another dump is impending. This often occurs in hot weather situations. Swamp ass can also occur when one is holding back flatulence or avoiding taking a dump in a filthy bathroom.
I had Indian food for lunch then got all sweaty walking home and have a nasty case of swamp ass. I need a shower and a butt-wipe. Dude I have the worst swamp ass right now but there's no way I'm taking a dump in that place.
by Fred S. Tare May 30, 2014
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