To be honest a few. Not many. One of the worst was because someone came up to me and for no reason put their hand in a tear in my jeans and ripped them all of the way down the back to near the floor. The tear was like a horizontal cut in the back of my jeans not from top to bottom. I got angry because I had just bought the jeans and really liked them and also, I felt humiliated I guess, I can't remember I just know I felt totally fuuckked off. This was all when I was younger not now. Something in my head just flipped and I threw something at them to get them to go away which hit them then it went worse from there. Other people then intervened to try to stop it. I also fought with someone who was trying to get something off me. I was once in a bar and someone threw a drink at my head which smashed on the wall behind me in the beer garden but I just ran away from that, quite literally, because I wanted it to stop and that was the best/easiest way, just to go. Apparently someone came out of the pub and kicked their ass anyway which I found out later that night. I don't think it was cowardly to run I think it was brave in away because that glass could have hit my head or anything. To run away, to say I'm not going to stay and deal with it, it was brave, no one on here might understand it and I can't explain it properly but it was.
The only one I'm proud of is when someone was attacking my sister (a guy who was a bully) on the school bus, and I hit him. I hit him as hard as I could. His mum brought him around to apologise later. It turned out his dad had died.