Choke - Chuck Palahniuk

The point was, it's not the sex part of pornography that hooked the stupid little boy. It was the confidence. The courage. The complete lack of shame. The comfort and genuine honesty. The up-front-ness of being able to just stand there and tell the world: Yeah, this is how I chose to spend a free afternoon. Posing here with a monkey putting chestnuts up my ass.
And I really don't care how I look. Or what you think.
So deal with it.
He was assaulting the world by assaulting himself.