How long does it wait?

Okay I haven't seen this movie, is it worth seeing? I mean...It Waits....for how long? Ten minutes? An hour? Is it waiting for a bus? Until lunch time? Is this movie actually scary or is it one of those typical extremely predictable story lines that will either bore me or make me laugh at its cheesiness?(I do like cheesy movies) The trailer just made me laugh out loud. So I wasn't sure if it was a serious scary movie or not.

"Before it kills...it waits"