Many horror movies have lines that seem to define the entire film, rendering them immediately recognizable just from muttering those few words.
Examples, you say?
Here are some of my favorite two-word phrases. All are from rather popular movies within the genre, but it's hard to be anything other than popular in the case of most of these films.
I'd like to think all are recognizable to most horror fans.
~The Evil Dead
~April Fool's Day (1986)
~The Amityville Horror (1979)
~An American Werewolf in London
(Okay, I couldn't resist that last one, even if it isn't iconic...)