There was once a man who owned a particularly large fish, one that was bigger than him. He had a system of large containers filled with water grafted on top of the fish's gills, along with pumps to keep the water moving, so that the fish could breathe without needing to stay in a tank. He also had wheels, handles, and bicycle pedals added on to the creature. In the end, he had a large mobile fish that he could use for his personal transport from work to home.
Soon, however, the fish grew tired of being used as a wheeled mount. On a Thursday that very week, the fish knocked it's owner off of it's back and repeatedly ran him over. The man was sent to the hospital with severe injuries, and the fish escaped scot-free.