Quick answer about the teeth: Of course I don't give him a dental exam, but when the teeth are badly stained, broken off, and/or rotting out of his mouth, **and it's immediately visible,** I don't like what it says about him. Or her, for that matter.

I'd say the same applies to limp, greasy hair, half-shaved whiskers or a scraggly beard, dirty clothes, and anything that makes the statement, "I don't take care of daily necessities." An abundance of piercings and a punk hairdo tells me that the person would probably not be compatible with my lifestyle. I tend not to like tattoos because I associate them with the kind of hypermacho man that turns me completely off. Oh, and dull, bloodshot eyes-- that tells me straight away that this person has substance abuse issues, in which case I would immediately run in the opposite direction.

It's one thing when it is something a person can change, or something they choose to do. Not being able to help it is another, and using something someone can't help as a reason to accept or reject, is what I find unfair.