According to Chapter 24, how did Sai Baba uniquely use humor as a teaching method?

Chapter 24 of the Sai Satcharitra explains that Sai Baba's method of teaching through humor was extraordinary. While people normally do not like being the subject of jokes, devotees craved Baba's humor and would eagerly await their turn to receive it. This chapter highlights that even through a simple joke, Baba could impress the essence of truth in a way that was beneficial to all. His humor was described as effortless, novel, and natural, often accompanied by a smiling face and playful eyes, which made its sweetness indescribable and its purpose immediately effective for the listener.