That is a fake poster that was posted to the facebook account 4 months ago.
Weinstein does do a facebook page for each of their movies, it looks like somebody made a fake page for this movie. Previous posts by the page creator have no captialization, lots of misspelling, and sound like a fan of the series (big contrast to other weinstein pages).
The Scary Movie page is also a fan of Acai Berry Diet?
There is no mention of Scary Movie 5 on the Official Weinstein Facebook page, or webpage.
The only mentions on the internet about Scary Movie 5 all link back to the fake facebook page as a source.