Teacher, Be Good, Don't Make Trouble

In the math class, the teacher said, "Look, students, if there is a car..." Before he finished speaking, more than fifty heads looked at the boy in the corner who was staring at the podium with a smile, "Dear, I didn't hide the car from you." More than fifty heads looked at the podium again, the teacher blushed,,,,, the chalk in his hand, poop!