Although I ain't proud of it Joe, I as a new Amateur Radio Operator, was changing the power tap on a Power supply unit I built myself, my hand slipped off the terminal and straight onto the "un-shrouded" 230V phase terminal.
I was 14 years old at the time, I've never forgotten that shock, it was like having a whole wasp-nest in the end of my finger, luckily, I had my Left hand in my pocket.
Since then, I've copped a couple of shocks, mainly only 230V ones, through not thinking.