We were studying Christmas customs from around the world. It was an ideal opportunity to share the Christmas story. I explained that Mary and Joseph had gone to Bethlehem to pay taxes. It was time for the baby Jesus to be born and they needed somewhere to spend the night. I told my students that when they went to the inn, there were no empty rooms. I compared the inn to a modern-day hotel or motel. I was leading up to the stable when I asked, “What do you suppose they had behind the inn?” 

One little guy, who had been listening intently, began to frantically wave his hand. His face was alight with knowledge. “A swimming pool.” 

One Liner
Does your train of thought have a caboose?