Give stiffy credit for noticing that. You'd think that sci-fi themed porn would have more of a market than is represented on this site. When you think of the relative dearth of sex that sci-fi fanboys get coupled with their innate proficiency with technology, you'd imagine that they'd be lapping up alien porn by the gigabyte. EDIT: By the way, it's easier to notice the cranial illusion if you un-focus your eyes on cap 5.

I think we've just tapped a new porn vein in Cap 6: siamese twins!

I think cap 6 may be a deleted scene from Weekend at Bernie's.