Just before the end of a school day the teacher says to the class " Don't forget tomorrow we have a very important examand it is absolutely compulsory for everyone to be here ."

The only excuse for non-attendance is a death in the family or a severe illness ."

Johnny stands and says " Miss , what if I wake up in the morning and am to exhausted to move because of extreme sexual activity ?"

After all the giggling has died down the teacher says " I still expect you to be here Johnny . You can write with your other hand . "