<noun> 'sh-um-lee-um-lum-doob-illy' singular: Derived from slang

A large penis
Person A: "My man, you got the utensils to pierce my shum liam lum doobily?"
Person B: "You sure you want to do that to yourself"
Person A: " Yeah dawg, I want a big ol' metal rod drilled right through my one eyed monster, but no homo shit when your down there homes"
Person B: "Iiiite then, 50 bucks and whip it out"
Person C, B, D, E and F collectively: "Oooooooh SHIT"
by Kevin Briggs September 21, 2011
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sexy gyals(mainly ginger with crazy eyes). usually got massive tits and a pornstar
carolanne: look over there its a

briony and carolanne: SHUM TING
by crazygyal101 March 8, 2020
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The act of shitting while cumming; the most euphoric experience a human can have
Dude, I was shumming last night and I literally couldn’t open my eyes for like 20 seconds because I was in heaven.
by YourMother0w0 June 18, 2020
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"Fuck, I need to stop shumming, it's so hard to clean up if your whores don't lick it clean for you."
by HaremMaster69 May 24, 2021
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Shum or Shumming is when you shit and cum at the same time.
Person one: yo bro how was your shit
Person two: not good I was caught shumming by my parents.
by Big hungas November 5, 2019
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The combination of shitting and cumming when you got to the bathroom and taking a significantly long time.
Mr Chog: I wonder where Mr Mahogany is?
Mr Lie: He"s probably *Shumming*
Mr Mahongany was *Shumming*
by The Minons September 28, 2021
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