Yes, I went to the movie theater knowing what to expect from the movie. I knew it was some kind of Scary Movie but, instead of having horror as the central point, having vampires. And it could be a good source of ideas, as at the moment there are lots of series about vampires. Probably I did not understand some of the jokes because I do not watch them. Oh well.
The movie sucks. No story, no intelligent jokes. Just stupidity. Of course it make me laugh. We laugh of stupidity often. In fact, we laugh of people falling and injuring themselves (just look to the usual Fail videos on the Internet).
Scary Movie movies had at least two or three nice looking actresses, and a lot of sexual jokes. Vampires Suck just has Jenn Proske (she is a really cutie, let me tell you) and the amount of sexual jokes is not really relevant.