So, to keep up with the recent joke-a-palooza:
One night, a man rolls over in bed and gives his wife a big, knowing grin. Immediately realising his intentions she says,
"Not tonight darling. I have an appointment with the gynaecologist tomorrow morning and I want to stay fresh and clean."
Dejected and disappointed, the man rolls over and tries to get to sleep. A few minutes later he rolls over and prods his wife again.
"Tell me, do you have a dentist appointment tomorrow, too?"