Its a show in one of those "Happy Ending Massage Parlors" in Korea.
They put you in a glass box and close it and a young asian girl whos eaten some very gross food and now has massive diarrhea comes and takes a giant shit all over the glass box while you're inside. After shes done they hose it off and let you out.
Tom: Dude how was the glass box show?
Phil: Very very strange. She ate some very bad Kim Chi. But oddly enough, I'm gonna go watch another one!