Once, while walking the dog I came across this fish on the side of the pavement. Then nearest pond was far away, and the nearest lake even farther. I spied the cigarette butt nearby and surmised that the cause of death was tobacco-related. I brought the dog home, grabbed my camera, replaced the cigarette butt between the fish’s lips, and came away with irrefutable proof that smoking kills.
(Hey, if you can’t entertain yourself you can’t fairly expect anyone else to.)