In light of Shridhar Chillal cutting off his Guinness Book of World Record longest nails. I learned that Shridhar had ran into his teacher as a child breaking his teacher's pinky nail, of which he got in trouble (below is why men in other countries grow out their pinky nail).... So at 14 he decided to grow out his nails and now at 81 decided to have them cut. So this may be why Kerron grows out his pinky nail.
"Long nails, especially when they are clean and unchipped, point to a man belonging to a socially superior community - much like in other parts of Asia where growing out, bejewelling and decorating finger nails was symbol of status for both men and women.Historically, having at least one long nail is associated with being upper class - an indicator of wealth and elegance for a man. And, quite understandably, the little finger nail tends to be the one that's grown out for practical purposes - being the least used finger. Long finger nails later came to indicate that they are not manual labourers but involved in administrative or academic roles at the workplace. It was a tool to set them apart from the larger crowd of hands-on labourers in the professional arena. Well, be it the desire to project high status, the desire to itch your ear in the most satisfying way possible, or a possible coke habit, I suppose all we have to say is - to each his own."