A person who suffers from sweating form the buttocks due to playing a video game form 4am till 10pm
Damn Zay when you stood up all i saw was swamp ass from your bean bag and your ass.
by Avery Married September 22, 2020
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When you hold in a poop in a car with the seat heater on and your poop starts to water down and it runs down your butt.
by shit mc D May 14, 2015
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When it’s hot and you’ve been sat down for ages causing your bum to sweat lots
person 1: “Hey I’ve been gaming for hours and my bum is wet”

Person 2: “You my friend have got something called swamp ass
by MBARR October 9, 2021
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The term used for when your ass starts to sweat intensely. Swamp ass is a living nightmare. It makes your ass smell like you just sharted. It's gross, and is a reason to wipe your ass like you wipe your floors.
"Sat down with swamp ass for the entire day. Now every seat I sat on smells horrible."
"I feel you, man. I had a hot girl next to me once. Needless to say, swamp ass ruined everything."
by Pango456 April 30, 2019
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The act of anal penetration with an unwashed member, plug, dildo, or otherwise insertable object after having had it inside another persons filthy unwashed ass.
(1) I can’t believe he gave me a swamp plug on the first date and never called me!!

I don’t even know what to do with his dirty but plug!!
(2) dad I can’t believe you gave mom a swamp plug on Christmas how did you even get anal from aunt Helena she’s been dead for years
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When a girl curls up so there is a divit made in her stomach and the boy jizzes in it enough to make a pool or swamp.
My girl is asking to do a swamp ‘n a boulder tonight. It’s weird dating girls from Florida.
by SWAMMMPYIE January 22, 2018
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