There are different ways to use the term "fucked-up", when pertaining to movies
{1} F.U. = WTF
This is one of the most delightfully FUCKED-UP things I've ever watched. It's adorable and yet terribly grotesque and unexpected -- you just don't get what it's about, but you can't stop watching.
{2} F.U. = DEPRESSING
This movie made me feel FUCKED-UP. It made me lose hope in love and life and, well, true happiness in general. I loved it.
{3} F.U. = BAD. JUST, BAD
I loved the story, but the screenplay was FUCKED-UP. I mean it was bad for srs. Especially the fire in the cave. Sheesh.
{4} F.U. = WHAT THE FUCKING HELL
THIS. IS. FUCKED. UP. I MEAN WTF MAN. I am not the type to be easily disturbed but I am all WHAT. THE. FLYING. FUCK. This is going to give me oodgy nightmares.
(although kudos for being unique)
WTF.
disclaimer: If you are the type to be easily disturbed or scared or whatever, DO NOT LOOK UP THIS MOVIE OKAY. Don't let curiosity get the better of you, trust me.