Well if I remember right as a kid my dad had a 1936 Stinson and he would lean engine to quit first and then hit kill switch. If the switch was bad he wouldn't know it because the leaning would kill the engine first. Just as engine was dying he would put fuel back to normal. A couple of members in my Model T club have good running but wore out engines . When warmed up and shut off will self start just by turning on key. This is not magnito but battery fired coils. This will not happen on a fresher (higher compression engine) I could see a big person lean on a prop of a well worn airplane engine and turn it just fast enough to create a spark.
There is no such thing as a 200 lb catfish in the USA. Record is about 100 lb but if you caught that on 2 lb test line you'd be famous. This is just an old urban legend around if your a fisherman...............