A middle-aged woman has just got out of the shower and is looking at herself naked in the full-length bedroom mirror.

"Oh my God!" she laments to her husband. "Just look at me! Sagging tits, bum like a burst bag of broad beans, bat's wings, crow's feet, everything wrinkled...I'm a total wreck! For God's sake say something good about me and cheer me up!"

"Sure!" says he. "You have perfect eyesight..."