What a boy!
Mom: "Sweety, what did you read at school today?"
Son: "Nope, didn't read any book."
Mom: "Why?"
Son: "Because I am too good at reading".
...
Son: "Mom, do you know what is 7 times 9?"
Mom: "What is it?"
Son: "63! Mom, do you know what is 8 times 9?"
Mom: "What is it?"
Son: "72...