9. Hidden Raunch - The Rescuers
Disney has something of a reputation for supposedly hiding sexy content in their kids movies in defiance of censors, but most of the time it's just because over-enthusiastic fans see penises in anything remotely phallic shaped. Which probably says more about them than Uncle Walt's employees.
But The Rescuers genuinely DID have some sexual content hidden in it, thanks to some pranksters in the animation department who put the tiny image of a topless lady in the background of a chase scene. Much to the studio's horror, it has to be said.
Spotting the secret wasn't possible for many years after release and it took until 1999 when the film was released on VHS for a second time for anyone to notice, and Disney promptly recalled 3.4 million copies in horror.