I was spraying the weeds in the parking lot of one of my customers. In the adjacent lot, owned by the same customer, there were local high school cheerleaders having a car wash fundraiser.
Some guy pulled up in a Honda Civic and asked if I knew who owned the lot. I told him that I knew the owner. He told me that the cheerleaders were washing chemicals down a storm drain, instead of a sanitary sewer and that it would harm wildlife. He wanted me to pass that info on to the property owner.
Then he said "I'm a big environmentalist." I was tolerant of his rant until he said that. So I said "But you drive a car." He gave me a puzzled look, so I continued with "And you live a modern lifestyle, use electricity, buy manufactured products, and throw your waste in a landfill." To which he replied "Um, well I'm talking about the water." I told him he was a hypocrite, and to leave me alone to finish my work.