I bought a smokeless firepit, which works by surrounding the fire with a compartment of air which gets superheated and shot back out into the smoke, igniting it and getting rid of almost all the smoke a fire normally puts out.
The day I set it up, I had it sitting on the grass and started wondering if the outer wall was hot enough to set my yard on fire. There happened to be a lot of dead leaves around, so I decided to touch one against the outer wall of the firepit and see if it caught on fire.
When I actually went to go do this, my brain skipped over the “pick up a leaf first” step, and I just touched the firepit with all five fingertips of my dominant hand.
I somehow ended up with mostly second-degree burns and only a couple smaller third-degree burns, but 0/10, do not recommend. Fire is hot, and touching it results in a lot of pain.
I have thick hair. I once flipped my hair and cracked my neck
I’m not sure if it counts as an injury as such, but close enough…
When I was in my early 20s, I took my eye drops out of the fridge and put them on the bench. I went to the toilet, came back, picked up the eye drops and tried to drop them in to my eyes. Turns out I picked up the super glue. Thankfully, I was really bad at eye drops, so I blinked, and just glued my eyelashes together, but still, it’s one of the dumbest things I’ve done :)
If that is “one of” and not “clearly” the dumbest thing you’ve ever done, I’d love to hear some of the others.