A motorcycle which spends a majority of its time submerged in water, lying on its side, or sunk up to the axles in mud, silt, or sand.

See also: bush pig, clapped out piece of shit, dr650.
No bro, I swear the Swamp Donkey runs better with the airbox full of muddy water.
by ThrottleItOut June 12, 2019
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A dirty little weight truck that is tough and goes in the mud
Dirty little truck usually driven by a country boy that hunts and fishes in the souther Louisiana swaps. He is driving a swamp donkey that needs to be cleaned up!
by Country Fun truck March 25, 2018
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Is when a pitcher throws a pitch and gets absolutely crushed.
Pitcher: “Gonna go for slider inside” <<Pitched>>- <<WHACK>>

Announcer: “ Oh My! He hung that slider and ended up being a Swamp Donkey!”
by SwampDonkey_1013 May 24, 2022
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Is a busted ass female or male pertaining to their appearance whether it be their looks or the dressing ethics
by Defacto17 November 23, 2019
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A cum dumpster. Usually disgusting. Was previously hot before she became a huge slut that wears WAY TOO MUCH make up.
She was cute until she turned into a swamp donkey.
by TeddyW September 15, 2010
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A person who spends a lot of their time near or in a swamp/dump. Tends to make poor decisions and fuck off quite a bit, while making others believe they are doing a good job. Won’t hesitate to slam any chick at anytime. Low morals with low aptitude, but may sometimes surprise you with their ability to be friendly and cordial. Another name for swamp donkey could be “swamp donk”, “dump donkey” or “Aaron”.
Man, Aaron sure is a fucking swamp donk.

Quit acting like a swamp donkey and get some shit done.
by Seldomlyresponsible May 11, 2020
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A not so rare breed of female that is chunky, stinks, and has loose gaped out pussy lips that hangs like sleeve of wizard.
Damn vato did you see that snapchat from the party last weekend? That girl esmeralda is a straight swamp donkey, she had 10 dudes filling her up and she was loving it!!
by FuckingTrickyBiscuit April 22, 2021
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