The viral trend of mocking up trailers to flip movies into completely different genres has resulted in some hilarious, often dead-on parodies – among them, The Shining re-imagined as a cute family comedy, and Mary Poppins as a supernatural horror film. The next flick to get flipped is 2009's comedy smash The Hangover, which thanks to some brilliant editing is now apparently a lot more disturbing than we were led to believe...