11:22 AM. Underpants Man sighted again. Underpants Man is a guy who lives a few buildings away from me. He looks to be about 70 years old, 300 to 400 pounds. His name is derived from the fact that each day at around noon, weather permitting, he steps out onto the roof of his building wearing nothing but white boxer shorts and a necktie. He then proceeds to walk around his roof doing mild calisthenics -- basically he moves his arms laterally to simulate some form of "exercise." After walking around the roof of his building like this for approximately five minutes he furtively glances around to make sure nobody has seen him, and then he goes back inside. It's like this every day. Why does he do it? Why the necktie? It's an unsolved mystery. I am fortunate enough to live higher up than his roof, so I have an unobstructed view of this unique phenomenon. Underpants Man is one of those characters that make living in New York City so rewarding.