I once was in school, and a kid slammed one of those heavy school doors on my finger nail, this ripped my finger nail out of the skin, the pain was so intense I almost end passed out, and I had to go to the hospital, when I got there I had to wait in a room for three hours before I had localized surgery. Before the procedure I heard a kid scream at the top of his lungs and the doc came in and said that this is what was being done to me, I panicked on the inside but he said he was joking, he then proceeded to pull my finger nail out and he had to stitch up a tear under my nail, he then shoved the nail back into its natural place, the pain was worse than being hit very hard in the balls, mind you pulling finger nails out is a form of torture.