A man watched a fisherman unpack his tackle on the bank of a river. The fisherman pulled out some line, wrapped it round his left hand and flung the rod into the river with the other, pulled it back, and repeated the process. The man could stand it no longer. He rushed over and shouted "You're doing it all wrong!". "That's what you think" said the fisherman, "I caught two fish yesterday". "How on earth can you catch fish like that?" asked the man. "Knocked 'em out" said the fisherman.