When I was little, I slammed my htump in a car door. This resulted in permenent injury and a weird thumbnail. Normally, it doesn't matter. It's cosmetic, and noone ever notices. Bad ddrawing of my nail-
The little dip , however, sometimes gets infected...well, sorta. It's kind of hard to explain, but the nailbed just under the dip gets infected sometimes. I can't clean it out because a bit of skin usually seperates the infection from the dip. So I usually have to poke it with a needle to get at the infected bit, and then I soak my thumb in peroxide.
I know, fun interested stuff, this. The main problem is that it hurts. A lot. My whole thumb throbs until the infection goes away. So, while soaking it in peroxide and watching bubbles bubble out of my thumbnail is kinda fun in a sad-sad way, the hurt makes me want to kill people. Or just slam my thumb in a car door and get rid of the nail for good.