What is the definition of a cold joke?

Definition: 1: It means that this person is quite calm and basically expressionless. After listening to it, the listener should be stunned and think about it before he feels funny.

Definition 2: Cold jokes generally go beyond conventional thinking, do not conform to logic and real life, and make people feel dumbfounded; Although some cold jokes are quite funny, they will not laugh like those who listen to "normal" jokes anyway; A joke that is not funny at all, a boring joke, can achieve the purpose of mental relaxation, because such jokes are not easy to understand; Brainstorming is a cold joke. Especially idioms borrowed from homophones and English, as well as puzzles such as peanuts and recent flowers.