Saw Ending 

An ending or conclusion in a movie, book, or other literary work, in which lies a completely unforeseeable plot twist far from the expectations of the audience. Named after the ending of the first Saw film, in which Jigsaw stands up from the pool of blood in the center of the room.

Boy: Holy shit, did you see Inception? I did not see that coming!

Girl: Yeah! It had such a Saw ending!

Saw Ending by TwiztedTBone August 30, 2010