One day, my wife and two children went to a store. The younger was 5 years old and the older was 8. The younger son was constantly asking for candy, and I said that if he doesn’t stop, I’ll go back to the past and take the candy I gave him yesterday. But then the elder said I couldn’t do that. For a while I was in panic, but then I knew what to do. I closed my eyes, kept silent, and then asked:

Remember the chocolate you ate yesterday?

What is? I didn’t eat a baton yesterday.

That’s it, son, that’s it!