Her trousers split

RRRIIPP!!

The volume and length of the sound left Sandry in no doubt what had just happened, even if she hadn't felt the sudden loosening of her trouser seat as she sat down.

"Oh, no." she gulped, her cheeks beginning to burn red, "Oh no, no, no!"

She had drawn the attention of several other students around her, but she turned to Robyn, "How bad is it?"

"Well," Robyn replied...