Blow Job is a silent film directed by Andy Warhol, that was filmed in January 1964. It depicts the face of an uncredited DeVeren Bookwalter as he apparently receives fellatio from an unseen partner. While shot at 24 frames per second, Warhol specified that it should be projected at 16 frames per second, slowing it down by a third.
Despite the salacious title, the film shows only the expression on the young man's face; the implied sexual act itself is not seen. It is not stated whether it is a male or a female performing the act, and the viewer must assume that fellatio is occurring. It has also been speculated that the salaciousness is entirely in the title, and that no fellatio was actually being performed.