learn from others fu#k ups

I could write a book on the mistakes my instrument panel customers have made before seeking help or advise. Instead I'll share my own goof.
I think it was a 85 model F 150 w/M400. Gosh aweful mess of vacuum lines and ported vacuum switches on those engines. Figured out which switch was bad, went to the parts counter and got one. Grabed a socket, climbed up on top and backed the bad switch out of the intake. I forgot to loosen the radiator cap and release the coolant pressure. Hot antifreeze went straight up and poped the bulb in my trouble light.
I shouted across the shop, "Troy, Walk over here and unplug this light for me".
Hot antifreeze and broken glass all over me was enough. I didn't need to ad electricution to my day.