The rip reopened

The seat of Sandry's trousers exploded open, staples pulling through the material and causing more damage, turning the oval into something more like the ragged circle of a cartoon character splitting their pants.

"No!" Sandry grabbed at her backside, feeling the rip, "It's worse than before!"

"So, turns out your bum beats staples." Robyn replied.

"Now what?"

The bell rang, signaling the end of class.

"Come on." Robyn led Sandry into the corridor.

"Couldn't you go behind me?" Sandry muttered, trying to hold her hands over her exposed panties.

Robyn took Sandra to a textiles classroom, where sewing machines sat around the wall on desks.

"Okay, take them off."

"Off?"

"Unless you want to lay on the machine and have me sew them with you still in them."

Sandry sighed, undid her button and zip and slid the trousers down her legs. Her panties, bright white from the back, now proved to be decorated at the front with a pink Care Bear, standing in front of a rainbow, and the word 'Monday'. Robyn burst out laughing.

"Care Bear knickers?!"

"Shut up!"

"How old are you?!"

"I didn't expect anyone to see them!"

"Hand over your trousers."

Sandry picked them up and passed them to her friend, who was still giggling as she surveyed the damage.

"Yeah, I don't think sewing them up straight is going to work, your bum is too big."

"Hey!"

"What, you don't think you have a big bum?" Robyn stuck her hand through the large rip in the trousers, "Exhibit A."

"Okay, fine."

"I think a patch will be best."

"Like, a square of different material over the seat? Won't that be pretty obvious?"

"There should be some material in the store that matches this, they have uniform material off-cuts. Take a look?"

While Robyn set up the sewing machine, Sandry went to a cupboard full of boxes of different material. She began to look through them for a matching one.

Suddenly the door of the room started to open.

"Someone's coming!" Sandry exclaimed, "Hide!"

"I don't need to hide," Robyn reminded her, "I'm fully dressed."