Two whales were swimming along looking for fish to eat, when they noticed a large fishing boat catching all their food.
The male whale said to his partner: "I've got a plan! Let's swim under the boat and blow our spouts as hard as we can. When the boat capsizes, we'll eat everything and everyone that falls into the water."
The female whale weighed up the situation, then shook her head. "I don't mind the blow job," she said, "but I draw the line at swallowing seamen!"