The other day, our neighbor from across the street entertained a guest. The guest had a dog, and the dog pooped. The guest bagged the poop and set it on the curb near her car, which was parked in front of my house. Then, she and my neighbor prepared to set off for a walk. I happened to be leaving at the same time, and suspecting that the guest would “forget” the poop, I disingenuously said, “You forgot your bag.” “It’s just poop,” she replied. “I’ll get it later.” No such luck. Hours later, the guest had left, but her bag of poop remained.