First time was around 7 yrs old, playing in a friend's basement rec room, knocked over a defective table lamp, it grabbed hold and didn't let go! Luckily my friend knew to pull the plug.

Worst was a good jolt with 115vac 400hz aircraft power in the Air Force, was thrown about 60 feet from one plane to another, have permanent callus on my heel from the exit wound. One leg of three-phase contactor on jet-turbine powered mobile generator failed to open. Add wet ground from monsoon storm, sweaty person grabbing heavily abused rubber connector plug and watch the fun. Thankfully the current took a mostly external path on my skin or I wouldn't be here today.

Also took a hit from a pulse ignitor for cinema Xenon lamp. 15kv at several milliamps, very painful.

Stupid should be painful.