Worst thing that I dont care about happened nearly 30 years ago - Broke a womans cheekbone, nose and a couple of ribs.
Was a Saturday night at the pub and she was the local "hard as nails" who had an issue with me - at the time I had no idea why as I didnt know her/hadn't spoken to her and had only been living in the city for just over a month - literally had not a thing to do with her.
She walked up to me and spat in my face. I cleaned it off like WTF but didn't respond. A friend I was with helped me tidy up and said to ignore her because she was known for trying to start fights and if you respond she batters you.
Later the same evening my friends and I had moved out to the beer garden and she came up to me again and punched me in the face, and i still didnt do anything because higher ground turn the other cheek etc and people were watching.
As I was rubbing my face she hoiked and spat at me again.
I got the "red mist" and it all went a bit blank but as I came round I'd got her pinned by the throat over a picnic table and was punching her in the face and people were trying to pull me off and yelling - there was a fair bit of blood on both of us from her nose and mouth.
Somebody had called the police and I was arrested for assault but released without charge later that night when the landlord and head bartender went to the station and spoke to the police - told them about the earlier spitting incident, and that i responded to being assulted and wasnt the initial aggressor.
Found out later that she'd had to go to hospital and that I'd done some damage.
Also found out that her issue was me "humiliating" her best friend a couple of weeks beforehand. My sin was declining a drink "sent over" to me while I was working bar in a different pub.
I thought nothing of it because house rule was no alcohol while you're serving it so had retuened it to table with a thanks but no thanks im working.
Apparently this was akin to a major crime if you think you're a lesbian mobster.
I still think back to that sometimes because Im so calm and conflict avoidant. Worries me a little that when my temper blew I had no control or real memory of the moment, it was genuinely a red mist moment. Never had it again and hope i never will because it felt dangerous.
Worst thing that I DO care about and was a complete accident but i still feel terrible -
Postman knocked the front door while I was in the hallway, my dog is a bed "tosser" and had flung it also into the hallway and was sleeping in it - as I was stepping over the bed at speed, she simultaneously jumped up to go bark at the front door and my foot collided with her head - i kicked her square in the face.
I just remember THE HORROR.
She didnt make a sound but had this stunned look on her little face that will guilt me ever more, as will the sound of my foot colliding.
My only consolation was that I was wearing a croc which i hope softened things.
This was a over a year ago and I still apologise to her and feel absolutely rotten.