When you have such bad diarrhea that it feels like your pissing out of your asshole; shitting piss.
Ugh, I was shissing yesterday because of the flu
by LeatherHunterman February 06, 2019
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Form of defecation that resembles urine as much as feces; liquid poo.
Matt just let some shiss rip in the toilet
by Dave April 06, 2003
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To take a piss and a shit at the same time (a combination of shit and piss)
Lisa: Honey, where are you going

Scott: I'm going to take a shiss

Lisa: Don't you mean a shit?

Scott: No a shiss, I'm going to take a piss and a shit, I just think it's easier and quicker to combine the two and say shiss.
by My Name Is Hugh...Mungus August 28, 2009
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That moment when you need to take a shit and a piss at the same time.
Hold that thought, man! I gotta take a shiss!
by Mu5Hr00m November 08, 2015
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A combination of shiting and pissing, you’d say it when something is really funny
Bro i’m shissing so hard
by yourmomscousin April 24, 2020
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To have a case of extreme diarrhea where the fecal matter is completely liquid. Like pissing out of your ass.
Dude don't eat that week old Taco Bell in the fridge or you'll be shissing for days.
by Marzmellow March 18, 2008
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When you go for a dump but only thin light brown water comes out, usually spattering the pan, often resulting in splashback
by Scaredtoleavethehouse June 14, 2009
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