A high school English teacher sternly reminded her class of tomorrow's final exam. She told the class there would be no excuse for not showing up, except in the case of serious injury, illness or a death in the immediate family.
A smart-mouthed jock in the back of the room asked, "What about extreme sexual exhaustion?"
The entire class burst into laughter.
When silence was restored, the teacher smiled sympathetically and replied sweetly, "I'm sorry. I can't accept that as an excuse. You'll just have to write with your other hand."