I went into the movie thinking I wouldn't like it. I was right.
Just kidding. It was one of the funniest movies I've ever seen.
Go see it now!
Yeah, same here. I was bored and really had nothing to do, so I went to see the 10:00 showing of it and it was friggin' hilarious. The theater was packed with kids, some of which I knew, and there were really no seats left. Surprising actually on a Sunday night.
Anyway, I definitely recommend seeing this. There are MUCH more laughs than just the previews show and is worth checking out in theaters. I think it has to be up there with the Anchorman type movies in my book, very good IMO.