Do you think he still went out on the bike when he got home???

I REALLY don't understand the mentality of people that do things as stupid as this, poking things in moving machinery is never going to end well, As the saying goes, don't put your fingers where you wouldn't put your dick, and it's true.
Guy i know who's a mechanic told me a story a couple of months ago about some other mechanic who minced his hand on a crank pulley/belts, apparently he'd been sanding the pulley down with emery cloth when the car was running, been doing it for years apparently....not anymore tho.