The Little Shop of Horrors is a comedy horror film by Roger Corman. It was later made into a musical and film of the musical. It’s in the public domain and available online. It’s a lot of fun.
When I was in high school, there was a TV show in Philadelphia hosted by Dr. Shock that showed low-budget horror films. That’s where I originally saw this film.

This is a lobby card that I have owned since I was in high school over 50 years ago.