I'd always read the entire reading book at the beginning of the year while I was waiting for everyone else to finish reading whatever story we were assigned. I did this even though I was in the advanced "A" reading group.
I wanted to stay in for recess and read, but they wouldn't let me. So I read under a tree instead. A little girl chased me around and hit me and I figured out she was just lonely so I negotiated with her and told her I'd be her friend and play with her once in awhile (1st grade?). So she stopped trying to hit me. And I played with her only when I couldn't get out of it. I usually only had one friend a year and didn't get along with a lot of kids.
You reminded me of something... I too would read the entire reading textbook in advance in school. I also would lock myself in my room and read for hours. My mom always said I was in my own 'little world' and used books as a way to bribe me or punish me. I would spend hours in the library looking up stuff, I wish I had grown up with google.

Another weird thing I would do while in college is I would buy textbooks at the college bookstore that weren't for my particular classes but interested me. Textbooks on psychology, international relations, political science, etc...
In early elementary, I convinced an boy a few years older than me on my bus that I had a twin and I'd pretend to be a different girl every time. I think I even gave my twin a British accent. I don't know why on earth he'd believe me but I'm 99% sure he did.
Reminds me of when I convinced my sister I was adopted and lived in an orphanage like in the movie "Annie"... lol