David was a chef for a large catering company. He enjoyed his work with the other chefs, but often liked to relax by going to the zoo. He particularly enjoyed the three-toed sloth which absolutely fascinated him. He would stand and watch it for hours, just hanging there, ever so infrequently making just the tiniest movement. He found it incredibly relaxing. So relaxing, in fact, that when a friend from the catering company complained that work was stressing him out he suggested they go to the zoo to watch the sloth and relax. This caught on among the chefs, and soon more and more of them would go to watch the sloth on weekends and days off.

Eventually David organised a day out for the company at the zoo, and all the chefs were standing in front of the sloth's area, watching it and relaxing. Suddenly, with no warning, the sloth lost its grip on the vine from which it had been hanging - it hit the ground heavily and rolled down a shallow slope into the moat at the edge of its pen, and to the surprise and horror of the gathered chefs the water began to bubble and steam furiously, until the sloth was well and truly roasted!

David suddenly realised what had happened.

"Oh, no!" he shouted, "We should have known better! Everyone knows too many cooks boil the sloth!"