My first 120v shock was when I was a teen 20 years ago fiddling with a Technics 5 disc CD changer, I was testing some stuff and forgot I had it plugged in when I rested my arm on the 120v input.
My worst shock however, was from a CRT television I was trying to see why it didn't work, again young teen and knew next to nothing, but had to start somewhere right?
Anyway grabbed the flyback anode cap at the CRT and it zapped my entire right arm, horrible pain through my entire arm that lasted for several minutes (I didn't even know what that suction cup thingy was
). The TV was unplugged mind you, but I didn't know the CRT held a charge. Live and learn I guess and still be a alive.
Learned not to be so careless after that. I did a lot of reading / research on discharging CRT's, capacitors, high voltage, etc. and none of that happened again. That was a nasty shock though.