Nothing titillates audiences more than sex and violence, so it seems natural that the two great exploitation film types, the sex film and the violent horror film, would merge into its own hybrid subgenre. Sex has been insinuated in horror films for decades, with the subtext of many a monster movie from Frankenstein and King Kong to the vampire movies of Universal and Hammer being the threat of sexuality to the female ideal and the aggressiveness of the male animal in terms of sex. As the trappings of the censorship laws governing film began to slowly loosen and fall aside, directors like Mario Bava, Herschell Gordon Lewis, Jean Rollin, and Jesus Franco inserted liberal amounts of sex into their horror films, replete with bloodied nude bodies and necrophilia. Subgenres of the horror film such as the slasher film and the monster film began to revolve around sexual domination: films like Humanoids From The Deep, concerning creatures who rape young females to further their mutant race, and slasher franchises such as Friday The 13th and Halloween movies played on the notion that a sexual girl was deserving of a murderous fate. Sex and horror in film have become almost inseparably intertwined since the 1960s, as filmmakers seek to pander to the lowest common denominator, with only a handful of artists (notably David Cronenberg) examining the notion of sex as horror and the underlying connection of sex, death, and the human body (They Came From Within, Rabid, Videodrome, The Fly).