A few days ago I was testing some new baits that I made and they were leaving an oily slick on the water. I had forgotten that I had coated the hook hangers with oil to prevent rust (I was using rebar wire) and the oil was coming off in the water. :

Last weekend at a tournament, my boater had me drop him off to get the truck and he wanted me to use the trolling motor to take it over to the marina and tie off. The red indicator arrow on the top of his motor wasn't on in the right direction and in an attempt to reverse, I went forward at full speed right into a sailboat... that was fun...