Xertun 

A slang name for cats. Used in a similar, endearing manner to 'car' or 'wunkus'.
Primarily encountered in the niche sub-reddit forum r/xertunposting.

discussing a cat gif - Oh boy that's such xertun behavior, I love cars
- xertun 🚙🚙

Xertun by m._z.d August 14, 2025

Xertun

A niche internet microcelebrity who started the r/xertunposting subreddit.

Contrary to popular belief, "Xertun" is not actually a slang term for cats.

Xertun really is posting, huh?

Xertun by JohnSwagma February 4, 2026

Xerunox 

The slang term used for when someone fucks their keyboard.

Ugh, he's xerunoxing again.
Why does he keep xerunoxing?

Xerunox by anonymous August 2, 2021