In my first week of high school, I walked into the boys toilet with my high back-pack and geeky shoes. There were a group of year 11's (final year for anybody not from UK), who used to go into the bathroom and smoke through the air vent as it wouldn't set the fire alarm off. Anyway, the all looked at me and started making fun of me. Being all sassy, I decided to hold my head up and walk towards the urinal. As I got to the urinal I slipped on a wet patch and landed right on my back and winded myself. I literally had to crawl out of the toilet while they all stood their and laughed.
It still haunts me to this day
On a plus note, I ran to my head teacher crying and I got to go home early