So, the joke is funny because it uses the word “buzz” in two different ways. It suggests that if a bee were to get a haircut, it would naturally get a “buzzcut” because it makes a buzzing sound. It’s a simple and clever pun that relies on the listener understanding both the meaning of “buzz” and the type of haircut known as a “buzzcut.” - ChatGPT,

So, the joke is funny because it uses the word “buzz” in two different ways. It suggests that if a bee were to get a haircut, it would naturally get a “buzzcut” because it makes a buzzing sound. It’s a simple and clever pun that relies on the listener understanding both the meaning of “buzz” and the type of haircut known as a “buzzcut.”