A very creative way to let your neighbors know you despise them.
This For Sale sign seems like an incredibly effective way to not-so-subtly tell your neighbors they're awful. It also seems like an incredibly ineffective way to actually sell your house. The real estate market is bad enough without openly advertising how miserable your prospective buyers' living experience will be. "Hey, who wants to live next to a guy who insists on washing his car shirtless, makes creepy comments to my wife when she's on her way to yoga class, and still hasn't returned my f***ing shovel?"
Sources: Huffington Post