I don't think so the Beatles especially Lennon was too much for peace and "letting it be" (that's right i threw in a reference to another song lol) I think it referring to Loretta martin more as a "->-bleeped-<-"(pardon the word but i mean it used correctly, as in transvestites that are committed and dedicated professionals in the pornographic industry) she gets it while she can, meaning she gets as much sex as she can while shes still young.
What im getting at is i think he is more or less showing appreciation to our ->-bleeped-<- sisters, in the same way he shows appreciation to hookers in his song Lady Madonna, I think thats why he added this verse to the song, get back to were you once belonged, he is saying, go back to the sweet girl you use to be because later he says, get back home Loretta your mommas waiting for ya, wear your low neck sweater, wear your low neck sweater because you dont need to hide your adams apple, and your mothers waiting for ya, stop all the sexual things and make your momma proud again.