Have to watch it again... (spoilers)

I'm not sure if it's because I fell asleep a few times over the course of watching it a few days (not from boredom, just from watching movies late at night) but I had NO clue what the movie really meant.

I thought the movie itself did a great job of portraying drug withdrawal (having been there myself) and the interaction between two friends.

I knew from the reviews that this wasn't your typical horror movie, abs I can't say whether it was good or not. It definitely wasn't bad, I just don't really seem to get it or understand all of the context.

I don't normally do this, but I think I need to rewatch it right away. I've read some of the explanations in the board (about the demand for story being us, the viewer) but haven't read anything that really clicks with me yet.

If anyone has other insight I'd love to hear them!