mixture of shit/cum after a good assfucking
Joe's mother caught on to his homosexuality the summer he was home from college and she noticed a shumstain on his briefs.

by david rauch January 6, 2006
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The byproduct produced when a male shits himself while having an orgasm.
We had to change the sheets on the bed because there was shum all over them.
by seapocket September 27, 2010
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The act of shitting out cum explosively.
My girl was shumming all night. It was like an ass cannon.
by Hugh Gee Rection September 1, 2007
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A word used when you cant think of the appropriate word to fit into the sentence.
She was just so er.....you know......shum!
by Sammi May 4, 2005
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Nickname of Stanley Shum, is also used with Chicken Lui (and that makes Chicken Egg)
Nickname of Stanley Shum, is also used with Chicken Lui (and that makes Chicken Egg)

Student A:Is Shum Egg a real egg?
Student B:Think for yourself,8745
by Arandomrebelliousstudent November 11, 2019
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a bong but instead of a shotgun hole, u just pull out the stem.....fucks u up more than a bong. for me atleast
yo, last night i was hittin my shum non stop for an hour, that shit fucked me up
by egyptian420 September 5, 2006
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“The result of unintentional impregnation with a mix of Shit and Cum - Ejaculating in a woman’s vagina after having had anal sex with ample cock soiling by fecal matter followed by impregnation of the woman where the excrement contaminated the insemination process and hence effects the personal development of the fathered child”.
Look at this dipshit – Ill bet his parents had a Shum Cocktail.
by Nihilist 1 September 16, 2009
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