What witty answers have you encountered in your life?

In the fourth grade of primary school, a classmate had poor academic performance. He plays basketball in the playground when we have class, and sometimes he plays basketball with the headmaster. When I was in sixth grade, I changed my math teacher. He likes to tease people. Once a teacher asked a classmate in class, and the classmate got up lazily and impatiently. Teacher: "How much are six duck heads and three?" As soon as the students heard it, they knew they were poking fun at themselves and said, "Why, I can't hear what the teacher said.". The teacher said, "What did you say?" The classmate spoke louder. "I said, I can't hear you." That's inaudible. Burst into laughter.