This
movie's ending was
shocking to so many viewers it became the prime example for people who prefer to not
spoil the ending of a movie or book by knowing how it ends. Most people refer to this movie in terms of whether they knew the ending or not.
"Harry Potter 6 is the next
Sixth Sense."
"
La la la la ... I don't want to know the ending! My
bitch-ass brother always Sixth-Senses me and I've been avoiding him until Sunday."
"Dude, don't pull a Sixth Sense on me -- I don't want any spoilers."