As a child, I was never encouraged to crack a walnut and cut nail after the sunset, be it outside or inside the house. I clandestinely tried to crack walnuts several times, at odd hours, but this eerie belief of my parents and many others always hunted me and thwarted my endeavor. They said cracking walnuts and shortening hand nail after the sunset is tantamount to cracking one’s parents’ heads plus loosing life. Whether I believed in their belief or not, I haven’t cracked a single walnut after sunset so far. But now I know the logic behind and no more superstitious.