Megan Fox is a '40'!

Did we get your attention with Megan Fox and NSFW in the headline? Good. Now heres a behind-the-scenes video from the set of Judd Apatows upcoming comedy This Is 40, which hits theaters Dec. 21, highlighting the assets comedic and, um, otherwise that Fox brings to her supporting role as Desi, a highly sexualized clerk in a clothing boutique.

As you might imagine given the rest of the Apatovian oeuvre, the movie a semi-sequel to Apatows 2007 hit Knocked Up, chronicling one emotionally tumultuous week in the lives of married-with-kids couple Pete (Paul Rudd) and Debbie (Leslie Mann) has a healthy heaping of raunchy humor, so well, if you were planning to watch this video with, say, your grandma, you might want to pump the brakes.

Check out the full video below: