Describing something normal so that it sounds weird - take one

There's a part of my body that I cut off almost every week when it gets too long. If I don't cut it off, I find it easy to injure myself and it interferes with my manual dexterity. If this part grows back wrong, it can be hard to walk. There are some people who let this part grow long and they'll even paint it different colours, sometimes adorn it with art. My wife cuts this part off regularly, but she habitually leaves pieces of it on the floor where I inadvertently step on it. I'm talking of course about finger and toe nails.