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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 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
When the area bettween your buttcheecks, commonly reffered to as the butt crack, becomes sweaty and stinky.
After the soccer game friday, Ryan had a bad case of swamp ass.
by brit_legit February 04, 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 build up of sweat around tha ass and ball region. Usually the first place you begin to sweat.
It was a hot summer day and James was taking a nap. Dave had just got back from playing basketball and had some major swamp ass, so he decided to share the wealth by giving James a swamp asstache!
by nello April 02, 2006
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 28, 2011
When the crack off someones butt becomes so sweaty do to strenuous physical activity. Usually takes place in humid areas.
man i hate doing yard work. ya i know what you mean, i still have swamp ass from that shit.
by kronickilla October 05, 2010