What is the primary method Sai Baba used for teaching, as described in Chapter 24?

According to Chapter 24, Sai Baba's primary teaching method was quite extraordinary, as he would often use humor and jokes to impart profound truths. The chapter explains that while people normally do not like being the subject of jokes, they deeply craved Baba's humor and would eagerly await it. This was because even through a joke, he would impress the essence of truth, which was beneficial to all. As Chapter 24 describes, his humor was made indescribably sweet when combined with his smiling face, playful eyes, and natural gestures.