Dave Wickin, eccentric heir to a vast fortune, had two great passions in life; one was watching animated Disney movies (he owned every single Disney cartoon ever realeased on VHS, DVD, AND Blu-Ray), and the other was attempting to contact an alternate universe. Almost all of his extensive free time was spent in pursuing these passions. What little time he had left over was generally spent wanking to porn; his hobbies not exactly being the sort of thing that attracts women.
The happiest day of his life came when he finally succeeding in his goal and built a machine capable of exchanging small, inanimate objects (like, say, a note) with his counterpart in an alternate universe. Thus began a strange correspondence as the two swapped letters plotting out the differences between their worlds. The first difference noted was that the other world's population was predominantly female. But that was just the tip of the iceberg. It seemed that the alternate universe was hypersexualized. Unwanted pregnancies, STDs and sexual taboos were unknown. Pansexuality, polyamorous promiscuity, and physical attractiveness were universal.
Yet despite this, many things remained similar, including Dave's beloved Disney cartoon films (a passion for which his alternate self shared), of which all existed, with roughly similar stories, characters, and even songs. As in our world, they were considered children's classics. And yet the content reflected the sexualized nature of that universe. Many characters which in our world were male were sexy females in the other. All characters were "anatomically correct" (even when it wasn't biologically possible), and displayed this with frequent scenes of blatant nudity and semi-nudity. And most shockingly, every film featured a plethora of hardcore sex scenes depecting every sex act imaginable; not only between the protagonists and the love interests, but between the love interests and the villains, the villains and the sidekicks, the sidekicks and the minions, the minions and the protagonists, and eveyr other combination of characters possible. Even background and tertiary characters were shown getting it on!
Dave was rather shocked by his alternate's descriptions. He couldn't imagine a "Winnie the Pooh" in which Pooh lapped at Christina Robin's honey pot, a "101 Dalmatians" where Pongo and Perdy make Cruella De Vil their bitch, or a "Little Mermaid" where Ariel rides Ursuala's tentacles. Of course, his alternate had the opposite problem, being unable to conceive of a "Snow White" in which Snow isn't gangbanged by both the dwarves and her animal friends, a "Peter Pan" wherein Peter and Tinkerbell don't deflower Wendy and her sisters, a "Beauty and the Beast" in which Belle and Beast don't get horizontal on the ballroom floor.
Enflamed with both curiosity and arousal, Dave insisted that they use the machine to swap DVDs, so that he can see these porn versions of Diseny films. His equally curious alternate agreed, and so the swtich was made.