This joke sucks....
One night, as a couple lay down for bed, the husband gently taps his wife on the shoulder and starts rubbing her arm. The wife turns over and says, "I'm sorry honey, I've got a gynecologist appointment tomorrow and I want to stay fresh." The husband, rejected, turns over and tries to sleep. A few minutes later, he rolls back over and taps his wife again. This time he whispers in her ear, "Do you have a dentist appointment tomorrow too?"