Gerald and Harold were twins that were inseparable, share and share alike and exact duplicates in everything. As they grew older they had the same hobbies, including fishing. However, when fishing Gerald never seemed to catch fish and Harold always had "fishermen's luck".
One night Gerald stole out of the house with his brother's rod and reel. He went to the exact spot where Harold had caught a dozen trout that afternoon. He fished and fished with not even a nibble.
Just as he was packing to leave a trout leaped out of the water in a perfect arch and cried out solicitously, "Your brother isn't ill I hope?"
MORE WAYS TO LAUGH