Phrase often used by Western Michigan University girls who are well studied in the language of porn. These women delight in the insertion of the male phalus into their rectum for pleasureable reasons.
I gave my virginity to Dave last night. He pounded my womanhood with great gusto, so I invited him to throw it in my dumper. I don't know why, but he started laughing so hard, he fell off the bed. We broke up right after.

I need a man who enjoys throwing it in my dumper.
by Slim_Pickins October 24, 2007
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I told my bro to pump her in the dumper and then he went balls deep in that asshole.
by ivyvault June 25, 2015
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When, upon eating too much bad Chinese food, a shaolin-monk style battle breaks out in your digestive-track, resulting in an explosion of undigested pu pu platter into the toilet (often accompanied by a 'pow').
"Dude, pull over -- I gotta take a kung pao dumper."

"Don't go in there, sweetheart -- I just took a kung pao dumper."
by Emperor Man Face December 29, 2014
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The most feared of the craps possible to take that will completely annihilate your anus and any toilet you are using to the point that there is no point of existing after this shear and unholy beast of a teard.
No one has ever survived the apocolyptic and devastaional strike of the massive and utterly ownageness power of the thumper dumper code red, except for me and I live to tell the tale.
by ThumperDumperCodeRedSurvivor January 15, 2012
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This is a combination of the Upper Decker and the Door Dumper, with a twist.

You find the dorky friend of your adversary, stuff him in a garbage can, take a shit on him, fill the can with water, lean it against your adversaries’ door, knock and walk away. When he opens the door, he is flooded by the smelly water and his shit-covered friend.
That guy is such an asshole, I’m going to find his dorky friend and give him an Upper Dorker Door Dumper!
by Salt Creek Camping Crew October 16, 2013
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When a bowel movement at work that is so heinous in odor and volume that the dumper is inclined to lift his legs up into the crouching position so that no one will identify him by his shoes.
"I over-indulged at chili-fest last night, so this morning I had to pull a Crouching Tiger Hidden Dumper."
by Va-JJ January 13, 2014
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Someone who possess a bulging bum, almost resembling a full diaper.
Man Josh has a major dumper bottom going on. Wonder if his mother forgot to change him this morning.
by Big Barnacle September 1, 2017
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