What is a callback in a talk show?

In the talk show, callback refers to the response to something mentioned earlier, also called deduction. This technique is to repeat a part of the previous joke within a few minutes after finishing a joke, but it is not a simple repetition, but to make the repetition more interesting, thus causing the audience to laugh and laugh. This echo can form a closed loop and make the whole paragraph more compact and interesting. Talk show is a kind of radio or TV program, where the audience get together to discuss the topics put forward by the host. It originated in the early television era. At first, it refers to a talk show that is conducted on the radio, played at will by the host, and does not depend on scripts. Later, talk show gradually developed into a humorous program form. The host will invite guests to the scene to discuss various topics through teasing, humor and irony, with the main purpose of entertaining the audience.