A preacher of the old school was describing the events of Judgement Day and, of course, he used Biblical phraseology whenever he could.

"Oh, my friends," he intoned, "imagine the suffering of the sinners as they find themselves cast into the outer darkness, removed from the presence of the Lord and given to eternal flames.  My friends, at such a time there will be weeping, wailing and a great gnashing of teeth..!!"

At this point, one of the elders of the congregation interrupted to say, "But Reverend, what if one of those hopeless sinners has no teeth..??"