She slips on her pencils

She accidentally stepped on her own pencils, causing her to slip on them. Unfortunately for Marinette, her shirt had gotten caught on the hook her shorts were still stuck to.

As she fell forward, the sound of her shirt splitting open, with her cargo shorts tearing off her hips. She only barely managed to catch herself, but it was too late for modesty.

Poor Marinette was standing there in the middle of class almost completely naked. The only remaining pieces of clothing she had on were her matching underwear. Her baby blue cheeky panties with a lace trim on the edges wrapped around her hips and round firm bottom, completed with a baby blue lace bra.

The classroom continued to take pictures, videos, some even streamed the whole ordeal to the internet, where the girl's intimates would circulate for all time.