Originating in Cleveland, Ohio, "On Cuh" is a satirical way to put your word on something like phrases like "On God" and "On Moms" would. "Cuh" could mean anything so using it makes the subject not so serious and makes it more of a joke than serious matter when you're swearing on something.
"Ayo bro I got kidnapped by some aliens"

"On cuh?"
by 31216ChiCle December 11, 2018
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A term of endearment such as, bro, pal, and “my man” or “my guy
Donavyn: “Waddup cuh cuh

Damian: “Wassup cuh cuh”
by Donavyn Murchison September 27, 2018
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A word that a takuache uses. It's like saying homie or bro.
Edgar: Que quema cuh?
Eric: My tires cuh
by the dictonary BITCH December 7, 2019
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kid-friendly nigga.
yo, what up, cuh?
by kellogg cereal January 30, 2019
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1.Cuzz; short for cousin. Used to refer to a person as your friend/homie. Commonly used among southern gangster/ghetto individuals.

2. Word used by members of gangs Crips, and Folk nation, talking to another member.
1.Yo, what's up, Cuh?
2.Yo, cuh. We need to buss a cap in these slobz.
by Kirk March 18, 2004
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cuh is a short slang word for cuzzin or cuzzo
by bhad bhabie hater August 18, 2020
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A term used by piasa ass Takuaches who have an edgar hair cut to refer to their friends.
by Thatbitchhhhhh November 24, 2019
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