I've accidentally some Japanese scat movies and I'm pretty convinced that they're real.
Honestly, that's too fucked up for me, I don't care about much it sells. Some people would sell meth to first graders if it was legal.
My wife (gf at the time) worked customer service for amazon.co.jp and they sold hardcore porn DVDs, including scat, pissing etc and people would eactually call up to ask questions about that stuff to Amazon customer service.