This one's about a family friend.
He's a serious environmentalist and really tight, to the point of annoying his wife. The light above the kitchen sink is 10w of dimness (this is pre-LED). The AC is set to 85 at night, and it's humid, so everything is sticky.
He decides that the front door needs to be closed immediately whenever someone leaves. When the wife is at work, he connects some old window iron as counterweights so that the door swings shut. Wife comes home, gets bonked by the door, screaming match ensues. That was the final straw and, needless to say, he's now divorced.