Much to my dismay I no longer teach Andy, Isaac and Jenny. Their absence is a direct correlation to my lack of recent daily gems. Luckily my co-teacher Claire has been picking up the slack. She recently gave us this gem.
While sitting in class.
Andy: Teacher, I have a great idea.
Claire: What's your idea Andy?
Andy: Umm... I don't have leprosy.
He then looks at the other student in class and says, "Don't worry Isaac. You don't have leprosy either."