My dad overreacted all the time. I still haven't forgiven him for the way he treated me as I grew up. I mean, for starters, he smacked me until I was nearly 16. Don't get me wrong, I'm not against smacking but you don't smack your teenage son. That's just wrong. And after he finally stopped smacking me he resorted to constantly grounding me for even the slightest things including things that weren't my fault. Apparently my patience is very superhuman because I haven't murdered him in cold blood yet. I certainly wanted to.
He once grounded me (when I was 19 - I turn 21 later this month and moved out over a year ago) for merely having a different opinion to him because, in his view, my opinion was dangerous.
One time when I went and took responsibility for a porn addiction by asking him to log me into the router so I could add certain sites to the blacklist under his supervision, he went behind my back and added all of YouTube to the blacklist as well. His "logic" behind it was far too retarded to be called "logic" - it was so unreasonable, in fact, that it defied all intelligence altogether and probably warranted his death. It was that bad.
He is the source of 99% of all my anger/rage problems. At one point he drove me to such anger that I went out to the garage and took an axe and an old piece of furniture that he was planning to throw out, and I took out my rage on it but he came and stopped me and then, as usual, grounded me for a week or two. Maybe a month.
I was meant to show my brother how to start the lawn mower up the other day when I came to see him, but I forgot to before I left, and as a result my dad kicked him off the computer for the rest of the day and apparently also for a few days afterward.
I could go on but I'm literally going to pop a vein in my neck if I try to recall any of my years spent living under his roof.