<human>: Can you provide a brief rundown of the text in within 3 sentences?

We were hanging out at the park, and I was throwing the frisbee around with a few others, when at the top of the hill, one friend took my other friend's bike, and started riding away, toward me. I saw him coming, and I thought he would have been stopping by the time he got to me, so I put out my arm to grab his. He didn't slow down, but I kept my hand out. He got to me and for some stupid reason I went through with it and grabbed his arm. The bike swerved and threw him off. His glasses got bent (possibly broken), he got a cut on his cheek and his nose was bleeding. 

He was extremely irritated at first, but as he cooled down I apologized more. I'd only feel really bad if it was just him hurt, but I may have also broken his glasses, and I don't have money to pay for that. I gave him the 20$ I have and I'm waiting to see if I need to cash in my christmas gifts. to pay him back

I hate myself right now. I don't know why in the world I thought that would be a good idea, I should have known what would have happened. This has been tormenting me for the past two days, I don't want to face that group of friends. I feel like a huge idiot.
<bot>: I'm a freaking idiot and I made my friend biff it on the bike, possibly breaking his glasses and definitely breaking me.