As I said you can't understand it, but you have to accept it.

There are many people who like scat! they like it when girls shit on each other, they like it when they piss on a girls face. I have absolute know clue why the like this, it's absolutely disgusting but it's a fetish and they didn't chose they fetish. So I do not convict them.

Or do you also ask: "why is this man gay??? this is disguisting!"