Let me say this first: slither is an extremely Americanised film. And it doesn't work. The first ten minutes of the film are up to the standard of, well, almost none. Granted the film does get better, but the ridiculous acting thats done in a way which suggests the film is entirely serious, drowns the film. The screenplay, by Gunn, barely pulls any laughs. I guess his answer to shaun of the dead (for which he also wrote the screenplay) is utter garbage. Granted, the film picks up pace as it continues but there is only one real funny scene at the end. The accents are cringeworthy and hard to love, making it really hard for the audience to sympathise with them. You kinda want the alien zombie things to win. But, as slither scales into hollywood clichés, of course that doesnt happen.
This film, frankly, is a mess of gags, slime and blood. Just not the funny type