A visiting minister during the offertory prayer:
Dear Lord," he began with arms extended and a rapturous look on his upturned face, "without you we are but dust..."
He would have continued, but at that silent, awkward moment when he paused for a breath, one very obedient little girl (who was listening carefully for a change!) leaned over to her mother and asked quite audibly in her shrill little girl voice, "Mommy, WHAT is butt dust?"
Church was pretty much over at that point...