malicious fecal distribution
Pooping in someone's yard to piss them off.
Also "MFD."
Also "MFD."
In July 2013, a news report on ABCnews.go.com said a Nob Hill, AZ woman was arrested for malicious fecal distribution after being caught by a security camera pooping in a neighbor's yard 4 times over the course of two weeks. The neighbors had been in a heated dispute for several months.