@thegibson I wanted to change where the coax line from the cable company entered the house, so I drilled a new hole into the basement. Suddenly, POP!!! The drill pops back. The drill bit was forcibly ejected. It is burning, somehow. The lights in the house are out.

I drilled into the main power line going from the meter to breaker box. I am both incredibly lucky and unbelievably stupid.