The Harry Potter franchise is arguably one of the most popular in the history of fiction, with best-selling books, beloved movies, and even a popular theme park. Part of the appeal is that the stories really are for all ages, marrying a wholesome child's outlook with genuinely adult themes, all while steering clear of the explicit violence and sex that many parents would frown upon. Sure, the books were once attacked for encouraging witchcraft, but that furor has long since subsided.
And yet it isn't all quite so innocent. In the credits for Harry Potter and the Prisoner of Azkaban, the movie's imagery matches that of the Marauder's Map, a magical map that shows the location of everyone on the Hogwarts grounds. It's a fun way to pay homage to one of the magical items used in the stories, but there's a dirty secret hiding in there: in the credits, in the bottom left corner of the school, viewers can see two pairs of feet crossed and shaking.
It didn't take fans long to infer that the two pairs of shoes were a couple of students (or teachers) who snuck into a corner closet to fool around. In an interview with Rus Wetherell, the credits designer, he said the couple were just kissing on the cheek, but considering the movie has a PG rating, he might be playing it safe on the record. He also added that there remain dozens of Easter eggs in the credits that no one's found yet, so who knows what else he snuck in there.