Here's one dredged up from my childhood.
I was brought up in a bit of Darlington that was still part of the nineteen forties in terms of housing standards and mindset of the inhabitants. The houses were terraced with outside toilets. No hot water, kitchen ranges for cooking, only one plug socket in the entire house, tin bath etc.
The plug socket was placed above the earthenware sink and I used to amuse myself by poking hairgrips into the live hole of the electricity socket - there was no integral safety barriers in round pin sockets. I could only gain access to the socket by sitting on the edge of the sink and stretching to reach the socket. One day, hair grip in the socket, enjoying the tingling I began to slip off the sink. A set of circumstances then came together to give my my first serious electric shock:
- Slipping from the sink caused the tightly gripped hair grip to scrape against the metal sleeve of the socket scraping the insulating lacquer from the hairgrip and establishing a good metal to metal contact.
- My hands were damp from my first scientific investigation involving running water from the tap - boring tale best left untold.
- I grabbed the tap to restore balance
- I was kicked by a horse and found myself several feet away from the sink.
I was seriously bewildered as I spun around looking for the source of my propulsion.
Looking back I count my blessings that I never got around to inserting uninsulated metallic objects into the socket in search of bigger thrills.
A couple of years later as folk were moving out from the houses in the street, the vacated homes provided an adventure playground for us curious kids. More often than not unwanted possessions were left behind. Exploring one of the outbuildings of a recently vacated house I found a large Ever Ready 9V battery with a lead.
Already knowing that licking battery terminals cause tingling I licked the two wires from the lead and was promptly hit around the head with an invisible plank accompanied by the appearance of multicoloured stars in front of my eyes.
The battery was not a 9V battery but a 90V high tension battery used in valve radios. I'd misread the 90V as 9.0V.
It was my first unforgettable lesson in numeracy.