This could be from any age really. I remember reading lots of books like Harry Potter as a 4th grader to seem smart to the teachers looking at me but I didn’t understand any of it. When the big YA dystopian boom was happening, I read tons of terrible YA dystopias to seem cool but many of them frustrated me.
When I was 8 I used to intentionally read books upside down. It was about 50 percent wanting someone to notice and comment, and 50 percent “I read adult books at home and this shit is so boring to my ADHD brain that I have to challenge myself somehow or I’ll die”. Anyway, now I can read upside down fairly well still, which is a completely useless thing to know how to do, but did once come in handy in an escape room involving a mirror.