9. Complete and tell the joke from memory. An optimist is someone who always look at the good ide o things. A pessimist is someone who looks at the bad side. For example, a pessimist looks at a half-eaten box of candy and as it is half-empty. In the same situation, what do you think a optimist says? Here is another way to tell that same joke. Can you com plete it? Do you know the difference between an optimist and pessimist? A pessimist looks at a half eaten box of candy and says it's An looks at the same box and says it's What other jokes can you tell in English?