By Kirk Miller Somewhere along the road to 50, I became obsessed with hair. Not on the top of my head (still there, thankfully). I’m talking about the odd strands and tufts that populate my ears, back, chest and everything below. Currently, I have two separate razors in my shower, two shave mirrors (one for the shower, one above my sink) and three different electric trimmers that each correspond to a different body region. But the “down there” area is the one that presents the most problems. That’s not a TMI admission — I’m only saying that it’s a landscape (manscape?) with more angles, curves…