Father used to ask us what the sharpest thing in the world was, in our childhood days. It could go right through your underwear without leaving a hole, and run everyone out the room.
He used to fish in a small aluminum boat with different friends. One morning, as the story goes, he was paddling while his friend was fly fishing. There was hardly no wind. His friend slipped a few out here and there, causing my Dad great distress.
We always took turns paddling and fly fishing. When it was my Father's turn, he had saved up a good one for his friend for payback. About a minute afterwards, he thought the boat was capsizing. He turned around to see what was going on, only to see his friend leaning over the side of the boat with his head under the water.