Eraserhead(1978)

A printer named Henry Spencer is on vacation when he learns that his ex-girlfriend, Mary X, has given birth to a terribly deformed baby. Henry marries Mary and the two try living together, but it d s not work out. So Mary leaves and Henry begins to care for the baby. After this, several bizarre events take place. There are visions of a woman in Henry's radiator who dances and crushes small, tadpole-like creatures. Henry has a tryst with a woman who lives across the hall, and he has a dream that his head is being used to make pencil erasers.