Looking Like a Fool (with your pants on the ground)

One morning this week Lilli's a.m. teacher jokingly told Brent we need to send her to school in some pants that fit. I don't have a clue what she means??Reportedly she spent the day pulling her pants down and throwing her arms in the air.What can I do??? This pair is 6-12 Months and Little Miss is almost 14 months old!!! I guess we'll just have to give her more Oreos!