It quoted a teenager from ancient Egypt who wrote a note to his father. She or he was very upset with how he did things. It was written on some sort of tablet. I found it very interesting. Times really haven't changed.
Kids are the same now as then.
I thought it was from somebody's kid down the road. But it was written thousands of years ago. I can't be positive of this of course, because I do not know where or when you read your article, but the ancient Egyptian texts from Oxyrhynchus contain thousands of papyri with snippets about daily life, shopping lists, private letters, including letters from children to their parents about the unfairness of life and general complaints about parental control. The Bodleian Library of Oxford University used to sell a postcard of an Oxyrhynchus papyrus with just such a text you are describing. You can search the web for the Oxyrhynchus papyri and find out more about them.