When directed toward a female, it has a sexual connotation — that the female called this is sexually impure. With a male, it is more just that he is a slob or a glutton.
Not when prefaced by “rude”. Listen, this guy is bad enough without Freepers imputing evil which is not there. Remember that a guy like this is too simple to engineer an adult insult. there is no forethought in anything he says or does.