Can humans be conditioned the same way dogs are? And, if so, can they be conditioned to have a sexual response rather than a salivary one? You bet they can!
If you've ever fantasized about Ginormica or the 50-foot woman, you're not alone. "Giantess" porn is huge on the Internet. Witness massive (and half-naked) women stomping cities into rubble, and tiny men who adore them. And yes, it's very NSFW.
Aliens come to Earth intent on wiping out the human race, but first they need to indulge in some really bizarre foot worship, in this utterly disturbing clip from 2003's Evil Alien Conquerors. Flossing? Really? Just goes to show that it's not just female alien invaders who have weird kinks.