This film is almost never funny intentionally. All the laughs come from the rushed dialogue, the odd pauses and fast responses, the awkward cuts and the I don't really give a crap about this shot attitude present in 80% of the movie.
Is the acting bad?
The worst.
Is the Story bad?
It's Vampire Hookers, the story is the title, if you don't want a laugh at that idea don't watch this movie.
Fart Jokes Included.