Take it further

You wait for a moment or two, letting the girls relax again, the Gryffindor and Slytherin both laughing at the embarrassed Ravenclaw. Once they had moved up a couple more paces in the queue you whip up the wind once more, again flashing her two friends with her white panties.

This time however as the Ravenclaw reaches down to smooth her skirt again, you add a second strike. Pulling at her skirt is enough to cause the zipper to snap and as Ravenclaw tugs, the skirt falls all the way down, pooling at her ankles.

She lets out a little scream, grabbing the hem of her blazer and pulling it down in a vain attempt to cover her white panties, panic welling up inside her.