She asked her child to call me uncle, how can I fight back against such remarks? This is a retort joke

One day, the teacher asked Xiao Ming: "Xiao Ming, do you know what 8x2 is?" Xiao Ming shook his head, and the teacher said, then go home and ask your parents or brothers and uncles. Xiao Ming returned home. He ran to ask his father, "Dad, what is 8x2?" His father happened to be playing mahjong and said, "Nine barrels!" Xiao Ming went to ask his mother, "Mom, what is 8x2?" His mother was playing mahjong. He practiced singing and sang: "Andy Lau..." Xiao Ming ran to ask his brother: "Brother, what is 8x2?" His brother was taking a bath and said, "It feels so good!" He ran to ask his uncle: "Uncle, what is 8x2?" "His uncle was on the phone with his wife and said, "Honey, I'm waiting for you to come back." The next day, the teacher asked Xiao Ming, "Xiao Ming, what is 8x2?" "Who told you?" The teacher gave Xiao Ming a slap in the face, and Xiao Ming said, "It feels so good!" "The teacher asked Xiao Ming to stand in the back. Xiao Ming said, "Honey, I'll wait here for you to come back!" "