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An unidentifiable repulsive substance. Or a splattering of smelly matter that stinks so bad you can't get close enough to identify it.
What is that shit? Man I don't know... smells like CUX!
cux by J.T. Naylor October 13, 2006
Related Words
Cux cuxie cuxy Cux Boy Cuxaw Cuxed cuxir cuxo Cuxoy cuxp
The act of masturbation or pleasuring oneself by touching one's genitals with a household object. i.e spoon, blender, hose, toothbrush.
1 I cuxed with a calculator last night! It was fucking awesome!
2 Did you hear that Susie can cux? I heard she uses a eyelash curler!
Cux by Me April 12, 2004
Dick, Luna for pienis, said kuks.
That guy's got a huge cux.
Cux by Lunavir April 3, 2009
A popular term used to describe (Cifuentes, 2018) "MAME".
I mamarme a LA cux
A user experience so cursed, humiliating, or psychologically damaging that it feels like the product is actively disrespecting you.

Symptoms:

7-step onboarding to do a 1-step task

Something went wrong :(” with no details

Captchas that make you question your humanity

Buttons that look clickable but aren’t

Popups asking for payment before you’ve seen the app

Dev replies like “works on my machine”
“This app has a CUX. The dev’s username is literally CuckDaddy.”
CUX by ninjabeavah February 11, 2026
(n) A male between the ages of 15 and 25 that one cannot fux with. It is comparable to the word "fuckboy", however a "cux boy" is simply intolerable to anyone with any semblance of social standards.
Greg: Yo i can't fux with that kid, hes such a herb
Ben: I know bro he's such a fuckboy
Greg: Na son, we're fuckboys, he's a cux boy
Ben: Word... cant fux
Cux Boy by fboy171 May 11, 2011