Now, how the hell does the woman on the bed get an ass like that?
Photoshop? I mean, I'm sure it's a fine ass and all (especially given the previously called out thumb grips), but it's looking to me as if there is some lateral distortion going on there.
I think those are just natural and because of the end of the bed it looks like more huge, If there is some instance it becomes edited in photoshop I think the tool they use is liquify or just a smudge to looks like natural and sexy.