Okay, it doesn't have to be New York City street food, wherever you live is fine.
Just now, I had 2 "dirty water dogs" with mustard and relish, a pretzel with mustard and a Dr. Brown's cream soda.
I love the chestnuts, come wintertime, that the street guys sell all over mid-town. In the summer, it used to be mostly granitas--shaved ices, but now most vendors carry different tropical fruits, like mangoes and papayas.
Anyone have any favorite "street foods"?