MANASSAS, Va. — Lorena is very matter-of-fact about the whole thing. There, she said as she drove us around in her Kia on a recent afternoon, was the hospital where surgeons reattached John Wayne Bobbitt’s penis after she cut it off with a kitchen knife as he slept on the night of June 23, 1993. Fifteen minutes away, near Maplewood Drive, was the gravel-strewn field where she disposed of the detached penis out the driver’s side window. So, why did she throw it away? I asked. “I tried to drive the car, obviously, but I had this thing in my...