It's disrespectful to make fun of your teacher's name.
Billy just moved and switched schools, so he is the new kid in class.
Billy wants to make the class laugh.
Billy raises his hand and asks a ridiculous and funny question.
Billy intentionally says his teacher's name wrong making it sound funny.
The teacher is amused by the question Billy asked and has a good laugh.
The teacher writers Billy up and sends him to detention.