One of the reasons my son liked learning new words and studying the dictionary before age 5, was so he could make more jokes. One of his friends used to ask me every time he saw me if my son had said any funny things since the last time he saw us. This friend says that my son notices everything and I have noticed this is especially true if it has any comic value. He can make me laugh until I am in tears and he does the same with his adult sister, who calls him several times a day because he is fun to talk to. I love to read with him because in addition to serious discussion about whatever we are reading, he will notice something funny about what we read that I would never have noticed. He can make jokes about almost anything, including being dyspraxic, puberty, everything except math. He never thought math was very funny and I think this is one reason he didn't like it as well as other subjects.