Wednesday afternoon, my algebra students were discussing the world's ending today. One girl added that the bible said it would rain for seven days and seven nights before the destruction and although they weren't taking this seriously, they gasped as they looked outside at the pouring rain.
Being quick on my toes, I just said, "Don't worry. The world will not be destroyed before you have a chance to take the regents. Everyone in here will pass." They laughed and got to work.