Eraserhead

The Man in the Planet (Jack Fisk) pulls levers in his home in space, while the head of Henry Spencer (Jack Nance) floats in the sky. A giant spermatozoon-like creature emerges from Spencer's mouth, floating into the void. The Man in the Planet appears to control the creature with his levers, eventually making it fall into a pool of water.

In an industrial cityscape, Spencer walks home with his groceries. He is stopped outside his apartment by the Beautiful Girl Across the Hall (Judith Anna Roberts), who informs him that his girlfriend, Mary X (Charlotte Stewart), has invited him to dinner with her family. Spencer leaves his groceries in his apartment, which is filled with piles of dirt and dead vegetation. That night, Spencer visits X's home, conversing awkwardly with her mother (Jeanne Bates). At the dinner table, he is asked to carve a chicken that X's talkative father, Bill (Allen Joseph) calls "man-made"; the bird writhes on the plate and gushes blood. After dinner, Spencer is cornered by X's mother, who tries to kiss him. She tells him that X has had his child and that the two must marry. X, however, is not sure if what she bore is a child. Read more on Wikipedia.