What is a cold joke? How to define it?

A cold joke is a joke that will be cold for an instant, but it will cause a sensation after a short time. . .

Suppose a person tells you such a joke: Xiao Ming cut a new hairstyle in the new semester. When the classmates saw it, they all laughed at him: Xiao Ming, your head is funny, like a kite. Xiao Ming was very wronged and ran outside to cry. Cry, cry ... He flew.

This joke is not funny, it will get cold. But silence will bring another kind of funny atmosphere. I can't define ~