Slither
Starring James Caan, Peter Boyle, Sally Kellerman, Louise Lasser, Allen Garfield, Richard B. Shull, Alex Rocco, Seamon Glass, Wayne Storm, Diana Darrin
It's a comedy and thriller movie, and has a rating of 6.2 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Spain.