<human>: Condense the text into a few key points

I am in 8th grade, and I'm pretty short. I have a tall friend, who's 4-5 inches taller than me. We were walking back to our lockers at the end of the day, just under 2 hours ago, when I pulled out a disc golf disc that I had stowed in my binder. I also had my lunchbox, which had a thermos in it. I passed the disc to my friend, who placed it on top of my locker. I couldn't reach it and I was holding my lunchbox so I decided to try to knock it down with that. There are windows right above and behind my locker grouping that go into a classroom.
<bot>: I have horrible aim and managed to accidentally throw a lunchbox containing a thermos into a window at my school, shattering it.