if you take the time to look at unphotoshopped images with the intention of finding something odd about them then you'll find it.
you'll see that the human form can look 'manipulated' even when it most certainly isn't. try it, i don't think it will take you long to find something that looks unnatural.
the vampire image was merely pointing out the woman's face (the eyes and the expression that implies shes is about to bite someones neck).
looking at that site i'd be inclined to say that some images are NOT photoshopped - which, to me, means the jokes on them.