Xiaoming English class with the teacher, said: "May I go to the toilet?" The teacher said: "Go ahead." Xiaoming sit down. After a while, Xiao-Ming Yougen teacher, said: "May I go to the toilet?" The teacher said: "Go ahead." Xiaoming and sat down. He next to the students ask: "Do you not like a teacher talking about it to the toilet? How not?" Little said: "You heard the teacher say, 'go to your head' ah!"