One night, as a couple lies 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?"