I didn't even do that when my hand slipped into a router bit spinning at 25,000 rpm.
Me : Honey, we need to go to ER!
Wife : Did you hurt yourself?
Me: Yup!
Wife: Did you hurt yourself bad?
Me: Nope! Hurt myself really good, it'll take stitches!
WARNING - Those that are squeamish may want to skip reading this post.
The last time I injured myself real bad, I was trying to tighten the mandrel screw on a lock-set hole saw, and while trying to get it super tight, the flat-head screwdriver slipped from the massive torque and pressure I had applied. and went right into my left hand betw the webbed area of the thumb and pointer, and penetrated about 1/4" deep and created this huge gash.
I basically stabbed myself in the hand at maximum force with a flat-head screwdriver. I am surprised it did not go all the way through.
I was stunned as I watched the blood pool out of the 2" gash as the screwdriver fell to the floor, and then droplets followed it down. I could not move. FUUUUUUUUUUUUUUUUUU!
It was like I was in slow-mo... and then I snapped out of it, and ran under cold water, and then peroxide, and kept ice on it for about an hour holding my hand over my head, waiting for it to clot.
Some might have gone for stitches, but not me. I hate going to the hospital.
Instead, I kept Neosporin on it with regular bandaid changes, and 3 weeks later now, it's almost perfectly healed. No loss of function nor residual pain.
Luckily I did not sever any tendon or nerve in my hand.
and Yes, there was lots of cussing along the way for me during that initial episode, all of which was in reaction to the excruciating pain of chiseling a gash in my hand.