I've been trying to identify this episode for years, and finally, it's on Hulu and I have Hulu, so I was about to find it. A "serial bather" seems to be targeting the homes of teen girls, bathing in the tubs, and more. Kimberly and Kenny have multiple conversations about inappropriate touching and attention, and Kimberly points out how often teens have to navigate unwanted attention and how hard it is to even confirm it's intentional, let alone seek justice for it. While this doesn't go far enough in exploring this topic, it's a good starting point.
Review of Frank the Potato Man
