Joke Collection Website - Cold jokes - How to treat punchline low and punchline high?

How to treat punchline low and punchline high?

A low smile means that this person is easily amused, and a high smile means that this person is not easy to be happy. I have a classmate who tells jokes and laughs miserably. A group of us don't know what he is doing. Many times, as soon as he spoke, he began to laugh and tears came out. This is my understanding of the punchline. It is estimated that everyone has a person with a low laugh.