Write an English joke, dialogue and cartoon story about something you did in the past.

One day, the school invited parents to the school to visit the school. During the first class in the morning, the students said hello to the teacher and said: "Good morning, teacher."

The teacher thought that students should also say hello to the teacher. The parents present said hello and said, "Where are the other parents?"

Before the students had time to respond, the parents stood up together and said, "Good morning, teacher."