@merlin

A former colleague used to add a bit of javascript to his blog posts on the company's internal server. He chose a small random rotation so that it changed every reload. Most of the time it was hardly noticeable but messed up the font rendering. 😉
The tricky part there was that the blog was on a well-known collaboration platform so it wasn't as straightforward as editing the CSS or page head.

Some worse examples here:
https://thelancashireman.org/dragons/

Hold on to your hat!