A teacher reminds her class of tomorrow's final exam. "Now, I won't tolerate any excuses for you not being here tomorrow. I might consider a nuclear attack or a serious personal injury or illness, or a death in your immediate family but that's it, no other excuses whatsoever!"

A smart-ass boy in the back of the room raised his hand and asks,

"What would you say if tomorrow I phoned in saying that I was suffering from complete and utter sexual exhaustion?"

The entire class does its best to stifle their laughter and snickering. When silence is restored, the teacher smiles sympathetically at the student, shakes her head, and sweetly says,

"Well Jimmy, I guess I'd have to tell you to write the exam with your other hand!