Holy hell.
This is a pick with a huge red flag on it - you have to fight through the voice. I started this book and I -hated- the narrator's voice, but I kept reading and the voice didn't stop being it's aggressive self, I just... gave it room. I let this character be and accepted his voice. Once you get past that it's just a short novel Full To The Brim with things that are disgusting, depressing, or both. It worked somehow! I have No Idea how!