Why, Indeed?

Two boys are watching The Incredibles on video. The movie is at the part where the family is flying to the rescue of the city, which is being attacked by the giant robot, and Elastigirl is on top of the mini-van holding the whole flying contraption together.
11-year-old: "That's the fastest way to get to PE and stuff."
9-year-old: "Why would you want to go to PE?"