The graffiti sub-genre that is dick drawing on NYC subway ads is really a folk art unto its own. It’s a very specific, but broadly interpreted genre, not unlike screen-door painting in Baltimore or low-rider culture in the American Southwest. I captured this gem at the Lafayette stop on the C train in Brooklyn:

I was really struck by the intensity of this one, particularly the profound use of negative space/cutout technique married with the brutal facial expression and aggressive take-no-prisoners type: “In your living room, in your face,” INDEED.