I have another one from about a decade ago. A bit of backstory, my mother's second husband (who technically was my stepfather from the time I was 9 until 19 but he never really deserved the title) had something of a violent temper and was prone to irrational rage. So, naturally, they divorced (finally).
He had visitation rights with my sister once a week, and part of the agreement was that mom would pick her up afterwards. I went along because I wasn't working that evening, and due to his behavior on past visits mom had been advised not to pick her up alone--bring a witness.
We got there about five minutes early so we waited in the minivan until it was precisely the time to pick her up, figuring that he'd just use that last five minutes to spend with his child. Ya know, like rational people would.
Nope--instead he came out raging, yelling about how we were infringing on his rights as a father, assorted insults and four-letter words, you name it. We had to roll the window up before he could reach in and hurt one of us, and he banged so hard on the window that I thought he'd break it. He storms back inside, but not before grabbing the antenna of the van and bending it to a 90-degree angle. We call the police.
He comes out a few moments later telling us that HE had called the police to report this "harassment". Mom calmly informed him that we had too, and he got a brief look on his face of realization that he might actually be in trouble, so he bent that antenna back. It's still damaged.
We finally got my sister and headed home, and got an estimate for fixing the antenna of the van. A week later we get a call from mom's ex-husband. To this day I remember that conversation.
Him: "Now, *mom's name*, I'm sorry things had to go the way they did, but I can take care of it. All you need to let me do is take the van-"
Mom: "No. It's my van, in my name, what makes you think I'd take a vehicle that YOU damaged to take to be fixed?"
Him: "I was TRYING to be nice and helpful about this, but if you're going to be such a c-word (he didn't use the edited version) about this then you can just forget about my help!".
She did eventually get a restraining order against him...which ended up being pointless since the one time he violated it, the cops refused to do anything about it.