My bio mom has a cat that’s a compulsive groomer. She’s constantly violently licking herself. It’s so bad she’s lost most of her hair and her skin is all dry and scaley/scabby. Turns into a screaming ball of razors if you don’t let her sit in your lap or acknowledge her sitting in your lap.
It’s like having an angry scabby nutsack sit in your lap that you aren’t allowed to look at.