"Watching people with no sense of humor get raving histerical."

Yep, the typo is a mistake. I damit it.

For fun, I looked up the word I inadvertantly spelled...

Hister beetles
Histerids are usually shiny black or metallic-green beetles with introverted heads.
Carrion-feeding forms generally hide under a corpse during the daylight, ...

Well dang! That does sound just like Ronnie-o. Perhaps it's the odd green color that gives him away.