Trying to continue with the lesson

Sandry stood there in shock at her clothing suddenly being yanked off her body.

"Hmm..." the teacher was equally shocked, looking the attractive teenager up and down. "Well, now we've had that demonstration, perhaps you'd better go back to your desks and finish your diagrams of magnetic ****."

"Even me, sir?"

"Yes, Sandry. Lucky for you that you were wearing underwear."

"Yes, sir."

Sandry walked back to her desk, trying to ignore the stares and whispered comments around her. She sat down next to Robyn.

"Wow!" Robyn exclaimed.

"I can't believe it!" Sandry replied. She sighed, opening her book and looking around for her pen. Spotting it in the middle of the desk, she reached across for it.

SNAP!

Her impressive breasts suddenly felt worryingly unsupported, as the clasp of her bra broke and the straps slipped off her shoulders.

"No!" Sandry gasped, grabbing at the cups of the bra and holding them against her breasts, "At this rate I won't be wearing underwear much longer!"