Years ago we had a neighbor behind us who was a commercial real estate developer. They did a lot of entertaining in their beautiful back yard, complete with high end landscaping, bricked grill, hot tub, and gazebo that acted as a bar. We'd occasionally wave across the fence/hedge that divided the properties, but that was about it.
A number of years later, Mrs Duke decided to start a compost pile in the back yard. Several months into it, the neighbor motioned to me as I was mowing the yard. He immediately started ranting about our "trash pit," and demanded we remove it because it embarrassed him in front of his clients. He called us "hillbillies" and said if it wasn't gone within a week, he'd "call the city."
A few weeks later an inspector knocked on our front door and let us know he was there to investigate a complaint about a trash pile. I walked out with him and in less than a minute he completed his inspection. He told me everything was fine and to not worry about it, but he did comment on how angry the neighbor had been.
As a natural born counter puncher, I decided to mess with him. First I strung up a clothes line between two trees parallel to the fence/hedges. The next day I went to a couple different thrift stores where I bought size "mumbo jumbo" panties, bras, and briefs. I also picked up a tin of brown shoe polish. Now it was a waiting game.
A few weeks later, they hosted another wing ding, and just as things were getting going, I went out (in bib overalls) and hung up the massive undergarments (with appropriately located shoe polish "skidmarks") I'd bought on the clothes line. Within minutes, they all went back inside. He never spoke to me again, and he never caused us anymore trouble. He eventually died and his wife sold the house.