It's Blood

In my less than humble opinion, the fake trailers were the best part of the Rodriguez/Tarantino project, Grindhouse.  They were so good in fact, that people started making them into real movies.  First Robert Rodriguez gave us Machete, then a couple of Canadian boys made Hobo with a Shotgun which is due out this spring.  Now it's rumored that Eli Roth is making a full length feature from his awesomly disturbing Thanksgiving trailer.

Below is that fake trailer in all its NSFW glory.