>>>Couldn't you just drive backward everywhere instead of messing with turning the motor?
>>
>>I think not! Logically, we know that when we drive in reverse, the motor is still turning in the same direction, it's the transmission that gets confused. Therefore, you MUST invert the motor for the desired effect.
>
>Of course. What was I thinking?!

I've heard of a case of a youngster who tried to start his 50ccm bike while standing on a slope. His hitting the pedal didn't actually work - but a slight backwards push it got from returning backwards down the slope did (he released the clutch, it seems... well, there were some girls around, which explains a lot). It was possible because the spark on that engine fires at exactly upper point of the piston, not a few degrees earlier as is custom on most engines.

So he had the engine revving backwards. He jumped into the saddle, revved it a bit more, and released the clutch. Perfect hit - he toppled all the tree garbage cans behind him.