Don't Throw Glass at People

At my current age of 17, I've learned the difference between right and wrong, stupid and smart, etc. However, I have slipped up more than once, but who hasn't? I've figured out then when someone tells you to do something, or dares you to do something, you don't always have to do it. The story I have to share definitely helped teach me that. Though I was young at the time, I don't think I'll ever forget it, or what it taught me.
I believe that I was in 2nd grade, which would've made me 8 years old. It was a perfectly pretty, warm day on the playground at Westchester Elementary, and I was just walking around after coming off the swings. I see one of my classmates standing by the large, wooden play-structure. Now, the classmate I saw wasn't always the nicest kid, but he was considered the class clown an he carried his label well. As I continued walking around, he yelled out, "Hey Kathryn, I dare you to throw this piece of glass at me," he was holding a triangle-shaped piece of glass in his hand he picked off the ground.
For a minute, I considered my options, throw it at him and miss, throw it at him and actual make a hit, or just don't do it. I, in all of my 8 year old wisdom decided to throw it. Now, he had to actually throw the glass to me so I could throw it at him, because for some reason neither of us would bring it or go get it. After he threw the glass to me, I examined it for a second, thinking if the glass would actually hurt him assuming I hit my 'target'. After I felt the edges a little, and gave it a brief, but thorough look-over, I decided it wouldn't hurt him. So, with my weak 2nd grader arms, I threw the glass. I figured I had missed, and I did, it landed about 3 feet away from him, so he was completely safe from harm. I'm pretty sure he knew it wouldn't have made it anyway. Thinking I was in the clear since no one saw me throw it but him, and the fact that I missed by an embarrassing length, he goes and runs to the teacher to tell on me. The first thing I did when I saw him running was start crying, I couldn't help it, but I was 8, either way, I was crying, and by the time the teacher got to me I must have looked like my puppy just died.
I explained myself to the teacher, but I still got in trouble. Although, my only punishment was writing a letter explaining what I did, and I had to get it signed by my mother, which was the part I didn't like. Seeing as I had no choice, I accepted my punishment and moved on with my life, but I don't think I'll ever forget doing that. Ever.
From my 2nd grade glass-throwing experience, I learned that just because someone dared you, or told you to do something, doesn't mean you should do it, especially if the person is a well known class clown. Since then, I haven't done anything anyone dared me to do, unless they were one of my close friends, and no one I really know would want to dare me to possibly hurt them. As for the guy who dared me to throw the glass at him, he's still going to school with me, however I haven't talked to him since maybe, 9th grade. So, if you're dared to throw glass at someone, don't do it, unless of course you want to get in trouble, then go on ahead, but don't make me say 'I told you so'.