Oh So Dirty

So when you were growing up, you had to take baths. Or not. And you had to brush your teeth, floss, etc. And wear clean underwear. Or not. See, when we got out to the real world, we realized that not everyone's mom was a neat freak and made you take nightly showers. Or that changing their sheets once a month, rather than once a week, was their version of reality. And hey, that's OK. Kinda like, "oh, you had bologna sandwiches for lunch? I had fluffernutter." But when exactly does the cleanliness factor become a deal-breaker? What is the precise moment that you run, screaming, from his/her apartment?