Did you get an iPhone 4S for Christmas? If so, you might want to take look at this video as a small warning. According to the video, Siri, the built-in assistant, just happens to be very a very bloodthirsty mass murderer.

This fake movie trailer from the U.S. web site Rooster Teeth has quickly managed to get nearly two million viewers on Youtube. Whether it is funny or not is actually up to you.

Here is “Siri: The Horror Movie”: