A slob is someone who…well, it’s a bit complex, but I’ll try to describe it. It isn’t just someone who doesn’t take care of themselves. It isn’t just someone with “bad hygiene.” It isn’t someone with a particular body type, or with a certain kind of mental regression, or anything like that, it has to do with an appreciation of body, I think.
A slob is someone in love with the body and everything it puts out, waste included. A slob is someone fascinated by their body as organic object. We spend our times in a world which tries to cover up the fact that, at the end of the day, we’re all just meat. This can happen through appeals towards beauty (hygiene, makeup, shaving, etc.) appeals through science (the dispassionate description of the body in medical textbooks, the facts thrown around about how we’re all just atoms in one form or another without any attention paid to what those atoms then compose) or appeals through spirit (all talk of souls/minds either religious or secular, the belief that personhood is found in thoughts and memories and not in actual being) and probably some other things I’m forgetting. A slob rejects those viewpoints and opts for a different one.
They accept that the body is messy. In fact, more than accepting it, they revel in it. This can, of course, happen to different degrees. Simply liking your pitstink is a one way you could be slobby. The act of masturbation is, I think, fundamentally slobby. Wallowing in piss and shit would be slobby as well. It’s all an appreciation or worship of the body as imperfect, messy organic matter, or at least, that’s the best way I can rationalize how I feel about it.