There are mostly some mistakes when you are making a great horror movie. The final girl bursts out laughing during her big escape scene; the blood-spewing machine malfunctions and soaks the entire set; the flesh-eating swamp monster trips over his own tentacles and falls down a flight of stairs. But sometimes filmmakers take these clips and transferred them to the gag reel, while in other cases they’re so good they end up in the final film. Either way, here’s a look at some great bloopers that will change the way you see these horror movies…