“A Bucket of Blood is a 1959 American comedy horror film directed by Roger Corman. It starred Dick Miller and was set in beatnik culture. The film, produced on a $50,000 budget, was shot in five days, and shares many of the low-budget filmmaking aesthetics commonly associated with Corman’s work. Written by Charles B. Griffith, the film is a dark comic satire about a dimwitted, impressionable, young busboy at a Bohemian café who is acclaimed as a brilliant sculptor when he accidentally kills his landlady’s cat and covers its body in clay to hide the evidence. When he is pressured to create similar work, he becomes murderous.“
From the Wikipedia article on the film, read the rest, linked here.