Fingernails
I think I have some sort of OCD complex about keeping my fingernails short. I can’t stand my nails being more than a few millimeters long. As soon as they get any longer than “short” I find that I have to cut them right back as far as I can. I hate the feeling of having anything under my fingernails and even if I clean them it still feels wrong.
I now have 10 very short fingernails again.

