Doctor - Wife Joke

A forty-something woman is jumping up and down on the bed and singing happily. Her husband watches her for a while then says,
“Do you have any idea how ridiculous you look? What’s the matter with you?”
The woman continues to bounce.
“I don't care,” she says. “I just got back from the doctor’s and he says I have the breasts of an 18yr old girl.”
“Oh really?” says the husband. “And what did he say about your 40yr old twat?”
“I'm sorry,” says the woman, “you’re name didn’t come up!”