Teaching
   The teacher had given the class an assignment.
   He stresses the importance of this particular assignment, and that no
   excuses will be
   accepted except illness (with a medical certificate) or a death in the
   immediate family (with a
   note from that member).
   A smart-ass student pipes up: "What about extreme sexual exhaustion,
   sir?"
   The class breaks up laughing, and when they settle down the teacher
   responds with:
   "Well, I guess you'll have to learn to write with your other hand."