"25. Hands - used to see if two wires are conducting electricity."
I've seen more than one electrician test 110v by wetting 2 fingers, same hand, and seeing if they are hot by touching them.
Don't try it with a finger on each hand, it will kill you!
Voltmeter (aka multimeter): Device used to test the voltage of dead batteries; it normally has dead batteries itself.
That's because the current only travels a short distance and feels like a buzzer between the fingers.
But your body gets used to it. In the AF, I worked on a lot of equipment as a PMEL tech and got shocked once in a while. The biggest wake-up I got was 10,000 volts DC arm-to-arm. I didn't jump. The first thing I did was see if anybody saw me make THAT mistake, so they wouldn't laugh, LOL. Also did that with 400V AC triple phase. If you know there is a possibility of shock, it doesn't have any heart-stopping effect. You just feel/look stupid. It's not the shock that stops the heart, it's the surprise. You can probably do 20,000 volts DC arm-to arm as long as it is gradual and you know it's coming without any effect on your brain or bodily functions. And nobody touches you.