You know at the beginning of the movie where they freeze-frame the main characters and show what they're activities were in school, what college they plan to go to, and their favorite quote? Well, go to the one of William. When they list his activities it starts to scroll because he's done so many things in high school. Well if you run the list in slow motion, they list the same things over and over again.

They list a bunch of activities he did, then I guess ran out of clubs so they started listing the same things over again, but since the scroll is going so fast you cant really tell. Play it in slow motion and you will definitely notice it.