Had an incident today.

Was lifting wood into the boot of my car with my brother.
He didn't want to help me at all, he was being real pissy about it.
The incident occurred when he dropped a log up against my motor and scratched my paintwork. A careless sloppy action.
I saw red and cursed him out of it. I used terrible phrases like "you stupid fcking cnut" and "useless bastard".
I've calmed down now and feel bad about the incident. He left after I got thick and now won't answer my calls.