My next door neighbour annoys me quite a lot. The woman that lived on the other side of him would continually park over the edge of his lawn. He remarked to me that it was irritating him.
A couple of days later, on a rare excursion out without the kids I returned home quite drunk to find he had left a note on her car, in a typically passive aggressive manner saying:
“Hi neighbour, would you please try not to park on my lawn? You have done it a lot and the grass is now dying. Many thanks, Martin”
I swiped the note, went indoors and wrote one out myself. “Hi neighbour, if you park on my lawn again, I swear to God I will bathe in your blood and dress up in your warm flesh. Many thanks, Martin”
She moved out a little while later and I always felt a bit bad.