The word Cumpiss is a combination of the words, "cum" and "piss". As the name suggests, it refers to the process of urinating after ejaculation. Peeing after ejaculating often causes your urine to become more viscous - almost of sticky and thick consistency and may be a bit harder to control at times.
It wasn't just an ordinary piss, it was a cumpiss
"Hey bro where, were you"
"oh sorry bro just taking a cumpiss
by ramadama_dingdong September 1, 2017
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"Damn why is your piss so thick and drooping".

"Cause it's cumpiss"

"Thaaaaats why it's whitish yellow, ok"
by Side boobs November 24, 2016
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When you just nutted, so you can't piss well. You have to do hard abdominal force to just piss a little.......very tiring
**nuts**
Pepe: Damn, I should have taken a piss before now I have CUMPISS and my dick boutta explode
by slimyjimmy April 9, 2019
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When a person with a cock has blue balls and needs to piss, but instead of piss; it’s cum!
Person: *Cumpiss cutely*
by TheLetter27 November 16, 2022
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When you cum and piss at the same time
Person 1: I'm cumpissing yoooooooooooo
by BigWillly March 5, 2019
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