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The word is a hybrid of the expressions "shit!" and "dayummm (as in damn)!". When used it means that the incident or anything that is being described is cringingly bad and amazing at the same time. Although the 2 words from which it originates is part of the american lingo, shiyum is popularly used in the medical colleges in south india.
Shiyum!
shiyum by NOGASer October 12, 2010
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Oh my she is soo shiyma i would not be her freind.
shiyma by Jack McRowley December 4, 2017
Related Words
shiyum • shitum • Shiyu • siyumi • shicum • Shivum • Shiyam • shaiyum • shibumi • Shibump
A cross between the process of having to shit, and the unexpected result from defecating.
Sal had to evacuate his feces, and wound up taking a shidump, which resulted in an extensive, overdrawn session of lurid defecation, thus alleviating his ardent anus.

"Ah man, don't go into the restroom, I just took one big shidump!"

"That shidump made all the difference! I feel lighter now."

"Alright let's eat, but first let me take that shidump I've been waiting for."
shidump by SonicJives May 25, 2009
When you go to the bathroom and make a stinky poop and then try to cover the smell with perfume.
Who shipumed in the downstairs bathroom? Please open a window next time!
Shipume by AmBoy2 November 11, 2018
He's a great guy, bit iffy can't lie.
he's a bit dumb, he must be called Shiyam
Shiyam by jeonjohn April 28, 2020
A girl who you think would be innocent but she is actually not. She says fuck a lot. She is a pretty chill girl
Person 1: Yo there goes shiyu
Person 2. Yea she is a chill girl. I thought she was innocent but she said fuck yesterday.
shiyu by yeeetttttjoemama December 4, 2020

Shicumpiss 

when you shit, cum & piss at the same time; usually happens in public restrooms.
Person 1: “I wonder where Person 2 went..”
*Person 2 walks in sweaty as hell*
Person 2: I made a shicumpiss
Shicumpiss by THENOTORIUSJONGJONGUN September 16, 2019
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