She doesn't want to wear her PE outfit

Dana entered the locker room out of habit, but then she remembered that if she takes this outfit off, she'll never find it again. So she goes to her PE teacher and sweetly begs to be able to keep her current outfit for PE. The teacher remembers the conversation with the principal and says a dejected "Sure, do whatever you want." Dana literally jumps with joy, to the delight of the passing students. And she skips off to the gymnasium, also to the delight of students in the gym hallway. She enters the gymnasium, pleasing all the students present, and eagerly begins the first exercise. And, unfortunately for the teacher, she volunteered to lead the first exercises.