Bill says "this is my stop" and gets off the subway, while Chuck stays on. But the sign next to him says the train is the Times Square - Grand Central shuttle, which makes no intermediate stops.
In the beginning of the movie, the pimp's arms are tied to the chair along with his body. As the body begins to fall, his arms are tied. As he progresses in the fall, his arms are up in the air (untied). When the pimp and the chair crash through the basketball hoop, his arms are tied to the chair again.