When you have the tendency to scratch yourself bloody, it is better to keep the fingernails trimmed and short. Otherwise you'd have scars on your legs, your arms, your skull, your back, your tummy, your bum. But if you already had them through partly your fault in the course of time, then embrace them. They're like tattoos, except the tool is your own hand and the ink is your own blood. And they're too priceless they're free.
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Like parts of mine in the hidden places.