As my son said when he was a really short person, “Oh! Ow! Otch!”
In high school electronics lab. Vacuum tubes were still around then, and I was soldering a circuit in a chassis. I did a lot of soldering at home those days and inevitably the soldering iron would swing around so the business end was facing me and if I wasn't paying attention I'd pick it up by the business end.
SO here I am working intently in the lab, nose buried in chassis. I reach over to grab the soldering iron (*huge* by my standards -- this isn't a "pencil iron", you could weld battleships with this monster), pulled up only to feel something pull back, looked over and yup... had it by the business end.
"Oh!" (Set it down carefully.)
(Wait a second and a half.)
"Ow!"
My lab partner couldn't stop laughing.