When a person finally need to violently shit and piss at the same time
Little Jimmy’s lower nether regions were about to implode he needed to shiss.

“ yo bro I need to take a shiss.”
by Grexy October 14, 2020
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When a person violently needs to shit and piss at the same time.
Little Jimmy’s lower nether regions were about to implode he needed to shiss.

“Yo bro I think I need to take a shiss.”
by Grexy October 14, 2020
Get the Shiss mug.
A portmanteau of shit and piss

Meaning to shit and piss at the same time
I’mma shiss myself later!

Past tenses I shissed/shass myself.

I’m shissing myself, right now let's talk later.

she shisses herself almost every day.
by All-around sonny boy March 14, 2022
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The water in the bottom of a portable toilet.
Damn, that was some nasty smelling shiss in the outhouse in the park.
by The Digital Data Dude August 17, 2020
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