Maybe we could come up with some sort of foolish "Challenge" like the ones that have gone viral on Facebook.
You know... like the ice bucket challenge, the hot pepper challenge, the mouth full of cinnamon challenge, etc....
We can call it the 4" hole saw challenge. I'll donate the hole saws.
Contestants will be put to the task of cutting a 4" hole through a 3/8" thick piece of steel plate, using nothing more than a 1/2" electric drill, a 4" hole saw, and an arbor.
Fastest time wins. Sit back and watch the injuries pile up.
Steve.