Have just found this thread and having read through the 10 pages, it is a relief to see some sort of consensus emerging.
It's a no brainer to me. I could never image saying "you couldn't afford me" in any circumstances. It wouldn't enter my mind. I really hope it would not enter my daughter's mind.
I can see if someone has, as a child, accepted that language into their repertoire, and has never re-examined it as an adult, it can be perpetuated.
However here we are all being given the chance to examine a phrase which further embeds sexism and objectification of woman, and it is difficult to understand how its use can continue to be defended.
Several people have repeatedly given much better alternatives worth repeating : raise an eyebrow and say "yeah, like you're so sexy", "crawl back under your rock", "go home dad - you're drunk", putdowns in French (!), various looks and gestures, in particular biting the top off a banana. Obviously different situations will call for different responses.
< makes note to keep banana in bag at all times>
Sorry to return to the well used parallel, but would we think it was sensible for disabled people to repel shouts of "spastic!" from trolls on the street with "not spastic enough to talk to you"?