Please tell me a joke, I need it urgently

The teacher asked Xiao Ming: "1 1=?" Xiao Ming said: "I don't know." The teacher asked him to go home and ask his parents. Xiao Ming first asked his mother, who was upset, and she scolded him: "Crazy." Xiao Ming asked his brother again, who was watching TV: "Black Cat Boss." Xiao Ming asked his father again, who was eating popsicles and said: " It's so cool." Xiao Ming went to ask his sister again, who was in love: "Honey, I'm waiting for you outside." Xiao Ming went to ask his sister again, and her sister kept saying: "Little rabbit, please open the door."

The next day, the teacher asked Xiao Ming 1 1=? Xiao Ming answered first: "Crazy!" The teacher asked: "Who told you?" "Black cat boss." The teacher said nothing and slapped him. Xiao Ming replied: "It's so cool." "Xiao Ming, come to my office after class!" "Dear, I'll wait for you outside." The teacher locked him in the office, and he replied: "Little Rabbit, open the door obediently. ."......