What is AV?
source from
http://www.japavs.com/faq2.html
"AV" is short for Adult Video. It's also often referred to JAV or Japanese Adult Video. The adult video industry in Japan is huge, releasing hundreds of new titles every month. It also covers many genres some of which you don't see much of in the West. These include amateur, bondage, rape, schoolgirl, facial cum shots (bukkake), scatology (pee & poop), and even older women videos, called "madam."