How to stop the pain

One day a group of snakes set off for a picnic. They took cream cakes and jam tarts and fizzy lemonade. They forgot that wasps love picnic too, and no sooner had they started eating than the wasp came buzzing along. The youngest snake was just swallowing a cream cake when he was stung on top of his head. Ow! Then he got stung again. "Pesky wasp," he hissed. "I must kill it quickly." At that moment he saw a horse and cart trundling down the road. He crawled over and put his head under the wheel. The wasp was killed at once - and so was the stupid snake.