I used to have a Science teacher who was a pretty attractive ginger lady, probably in her 20s/30s at the time.

Someone found a topless photo of a woman online who looked just like her, and had been spreading it around the school to the point where the photo had been shared across nearly every kid's PDA device. (For context: this was before the era of smartphones, but our school took part in a council trial scheme where they gave every pupil Pocket LOOX C550 PDAs. Yes, it was a colossal waste of money and no, they were almost never used in lessons.)

I always assumed it wasn't her and someone just found a pornstar doppelganger. Found out fifteen years later from my best friend that she was fired after an investigation found she was actually doing porn to fund her university studies and PGCE.