5. The high school teacher who grabbed a student's bikini pic off of Facebook and showed it during an assembly.

(via Thinkstock)

A high school teacher in Plymouth, England was trying to teach students a lesson about the dangers of social media, and wound up demonstrating why teachers displaying a 15-year-old's bikini pics during a school assembly is a terrible idea. The teacher at Eggbuckland community college downloaded the image from the girl's Facebook page which she'd posted a year before. Not surprisingly, the girl was upset. The school says it's launching a "formal investigation," which means they're hoping the story dies down before they're forced to scale the mountain of paperwork involved with firing a teacher. If nothing else, it seems a lot of valuable lessons were learned in the assembly that day.