A man started to climb a high, steep mountain when a snake asked the man to carry him along. “But you’re a snake,” the man said. The snake smiled. “Don’t worry. I won’t bite you.” After days of arduous climbing, the man reached the mountain summit, whereupon the poisonous snake bit him. As he lay dying, the man cried out, “You said you wouldn’t bite me!” His reptilian hitchhiker looked at him and said, “Ha! You knew I was a snake when you picked me up.”