The unexpected

Scene: a crowded N train, just before Christmas. A panhandler enters the car–old, dirty, hunched. As the doors close he breaks into song to encourage handouts. “Chestnuts roasting on an open fire….”
He finishes before the train reaches its next stop, and surveying the situation, he continues. “Sing it with me now.
“If you want my body and you think I’m sexy….”