Agreed that the true north on Charlie's moral compass is the waitress—however, I agree with Emily that the diatribe against her was out-of-character cruel—it would have been the same result, as far as the waitress is concerned, if he'd just used the girl, resignedly, rather than harshly.

"I hate school children, they're volatile and stupid, and they haven't
even got the vote. Might as well be talking to fucking geese."

"I hate school children, they're volatile and stupid, and they haven't
even got the vote. Might as well be talking to fucking geese."