These residents underestimated their neighbor, a retired engineer. As shared by u/soulslop, their father, who was the retired engineer in question, was not one to be messed with. So when his neighbor committed multiple neighborly mishaps, he got creative. This story certainly gives engineers a petty name, in the best way possible… and definitely will make people think twice before they throw their grass clippings into their neighbor's backyard. You never know who your neighbor really is… what i…