Another (mentally ill) man on the subway, redux:

A (cleanly-dressed) (tall) (thin) (young) (black) guy who's talking to himself and sits 2 seats to my left, making me draw up just a little so I sit in a less vulnerable position, and as he talks to himself in a running commentary, he's like, "I scared him," and so at the next stop I casually get up and go move to the middle of the car, and I continue to keep an eye on him and fortunately he gets up and leaves just a few stops later.