The skirt falls off

Before Robyn could finish her sentence, Sandry felt a sudden breeze around her middle, and a soft flump as something hit her feet. She looked down to see a strip of dark grey material, bordered by ragged stitching, sitting on her shoes.

Sandry realised that was her skirt, but in moving her feet to try and grab it, she somehow managed to kick it out from under the desk, where it hit another student's feet and was then sent flying across the floor.

"I was going to say you'd better not move," Robyn said, "because you'd torn the entire seam."

"I realise that now." Sandry sat back down, looking at herself. Her tight blouse did not quite cover her stomach, so had no chance of hiding her bright red knickers, adorned with a picture of Wonder Woman. "What am I going to do?"

"For now, I'd recommend not standing up."