When the trailer (or sometimes teaser) is better than the actual movie itself.
Me: did you see Sucker Punch (2011) the movie?
Them: Na, I heard that it was just a trailer movie.
I wont bother then, I hate trailer movies
trailer movies
A short sequence of scenes cranked up into a small film that depict what the movie you'll be watching could have been if it were to be good. Often the trailers for upcoming movies appear a lot better than the movie itself.
John: "Hey did you see that new movie trailer for *insert upcoming movie*?"
Martin: "Yeah I did, looked great. If only the movie was as good as its trailer says it's gonna be.."