In The Lord of the Rings, there is a line where the dead kind says "No
man can kill me" and then the woman says "I am no man" and procedes to
kill him.  I could SWEAR that nearly those exact same lines were in
another movie.  (or maybe book or TV show or something...)  Nobody I
can find knows what I'm talking about.  If anybody could find a very
similar line in another movie, where something can't be killed by a
man, but a woman does, please let me know.

This has always reminded me of Shakespeare's Macbeth, who receives a
prophecy which gives him false confidence. Macbeth is told "none of
woman born shall harm Macbeth." At the end of the play, Macbeth is
killed by Macduff, who was not technically "of woman born," since
MacDuff had come into the world by Caesarean section ("from his
mother?s womb untimely ripp?d".)