Ridiculous, after one viewing I didn't know what to make up of it.  All I knew, it had to be a joke.  Its a viral promoting Megan's character (Sophie Maes) in Simon Pegg's latest flick, How to Lose Friends and Alienate People.  They must have the same agency as Tropic Thunder.

Here is the Site for  Teresa - "The Making of a Saint"

Watch the trailer for the actual film.

found via Popoholic.