Part of the reason its so scary is the soundtrack makes heavy use of binaural beats which can produce emotions like fear
It's a show stopper for sure. First time I watched it seriously fucked my head up. Texas Chainsaw Massacre, the original, is up there too.
The title is the most accurate onomatopoeia I've ever seen in my life
I was genuinely worried people might not get it. Glad to see that was pointless.
Truly, it enhanced the meme viewing experience.