"Jennifer's Body"--Why Not Adam's?

Have you seen the new red-band trailer for Jennifer's Body, written by Diablo Cody? It's pretty awesome (way naughtier and way better than the regular trailer that's been playing in theaters). Watch (not safe for work?):



Diablo informs me that hot Adam Brody, who appears in eyeliner, does not bare his ass. (I ask these things for your benefit, not mine.) What a waste.