A High School teacher was giving his class a difficult assignment, he stressed the importance of this particular assignment.
He said that no excuses would be accepted, unless there was an illness-with a doctor's note; or a death in the family-with a death certificate.
One of his smart-ass students pipes up, "What about extreme sexual exhaustion, sir?" The class breaks up laughing, and when they settle down the teacher responds "Well, I guess in that event, You'll have to figure out how to write your assignment with your other hand."