Geometria (1987)

Geometria is a 1987 short fantasy horror comedy film written and directed by Guillermo del Toro. It is based loosely on Fredric Brown's short story, Naturally, which was originally published in Beyond Fantasy Fiction and later reprinted in the short story collection Honeymoon in Hell. Geometria was shot in Guadalajara, Jalisco in Mexico. It is the tenth short film del Toro directed, though all but 1985's Doña Lupe remain unreleased.

More at Wikipedia.