By my home there is a canal which takes "used" water and takes it to a plant for filtering. It's become a bit of an attraction for "tourists". I spotted some the other day and I couldn't resist. They were fishing. So they asked me about the fish. Are they safe to eat? To which I responded: "Well, yeah. They're safe to eat. but the last guy I saw eating fish here didn't make it out of the hospital. That alligator is a real problem". They ran off.
