The bathroom, or toilet. Often in reference to a port-o-potty, or other disgusting place to leave a sloppy one.
We can't leave yet, Mom is still in the dumper.

After eating all those beans -- refried and pinto -- I am going to have to spend some quality time in the dumper.

I didn't want to lay all that cement, so I hid in from the forman, in the dumper.
by Master Alexander June 13, 2010
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A girl's ass that you'd like to tap. Infact, any girls ass. I love girl asses.
"Man, that girl's legs go on forever."
"Not a bad dumper either."
by Balls November 14, 2004
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The original “dumper” was Mackenzie Zwicker. She’s the first girl to be called Dumper🍑
by Bobby😈 July 11, 2021
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A relatively large ass.
When someone with a dumper backs up,
it can be dangerous
Wow, Jade has a dumper
by Alex GERONIMO! December 19, 2005
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An individually that takes advantage of low wholesale drug prices to sell them for low retail prices.
She just wanna ride with a dumper!
by Mike Vick's Trainer March 31, 2017
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