I don't usually review things, but this episode left me completely stunned and at times mindf**ked. The episode deals with the occulus rift device which makes you part of a virtual reality. It starts out simple by Cartman messing with Butters as he always does, but then it turns out that maybe Cartman is the one being messed with, and it then soon turns into a huge paradox in which no one knows what's real and what's not. It's such a great spoof of movies with virtual realities and at the same time it's absolutely hilarious (the Indian customer service guy). All in all this is one of the greatest South Park episodes I've ever seen in which I sometimes literally laughed my a** off.