A recent All Hands Active (the hackerspace) clean-up/reorganization night. That wall to my right is entirely covered in whiteboard, and it is awesome.Every once in a while it's a good idea to be reminded that electricity, while awesome and good, can also be very painful. Turns out that the lamp in my left hand there had frayed and exposed wires wires up top, so when I plugged it in with the other hand it gave me a nice shock. This is not at all the first time I have been electrically shocked and it was by no means the worst, but it's still a good reminder that voltage is not just an abstract number.
I have been shocked with 120V many times. The worst was when I was in a music supply store testing out a nice little used Fender tube amp. It had nice tone, but the 2 10" speakers at 250W just didn't provide the grumble that I wanted (I later got a 400W 1 15" speaker with tweeter amp to satisfy this, which later was stolen from me and I do often miss it because that thing could roar). So I reached to the back of the unfamiliar amp to turn it off, and promptly found that the exposed vacuum tubes had been engineered right next to the on/off switch and, lucky me!, they were loose and kindly delivered a searing shock that knocked me flat on my ass and out of breath. Unfortunately, so far as I am able to discern, this did not result in the development of any superpowers. Maybe I need more volts?