Parenting

The Child sent me a text while I was at work asking if he can go to his friend's house.
My response was "No. You are grounded.
Moments later, his next text says "Please can I go?"
My response: "No. You are grounded."
His next response surprised me: "What can I do to make you say yes?"
I thought about it for a minute and answered back "Build a time machine and travel back to last week and tell yourself to be really really good or he will be grounded."
His response: "I was thinking more like do homework."
My response: "Well, that is a good idea. Math will help you with Quantum Physics, and you need to be a very good speller if you travel into the past."
His response: "Time travel is not real."

I am crestfallen!