My high school was VERY small. To give you some perspective, my senior class consisted of 38 people. 38. So, in essence, we seniors were one big clique. That is, until one girl named Lauren decided to start dating the ex-boyfriend of a girl named Stephanie. Now, I've known Steph for years, and Steph seemed to me to be a pretty sensible girl, but once she got wind of her friend scoping on her leftovers, she LOST it, and launched a campaign against Lauren that would put Mean Girls to shame. Steph was more popular than Lauren, so she essentially turned the entire school against Lauren. Prom season rolls around, and Lauren, whose locker was next to mine, casually mentioned to me one day that she'd gotten her prom dress over the weekend, a nice white poofy number. At lunch that day, my pals and I were discussing where to get our prom stuff. I casually mentioned that Lauren had already found her dress to my table, which included Steph. Steph almost immediately started making nasty comments about how she was gonna deface Lauren's dress at prom in front of everyone. The whole table, myself included, laughed it off as Steph just exaggerating and being stupid, so we never gave Lauren any warning. Turns out, she wasn't joking.
Steph marched into prom with a fatass black permanent marker and, while Lauren had her back turned, wrote "CUNT" on the poofy skirt of the dress. Lauren noticed people pointing and laughing at her, went into the bathroom and saw that written on the back of her dress, and hid in a stall, crying her eyes out until somebody called her parents. They came and took her home, and since Lauren never actually saw Steph writing on her, and the chaperone people were inept and couldn't see jack shit due to the dark lighting in the ballroom, and since nobody would turn Steph in, she got away with it. I saw her do it, and I could have turned her in, but I didn't. I tried to justify it as "well, none of the teachers questioned me personally, so I don't have to say anything", but truth is I was a pussy. It's been five years since I graduated from high school, and that shit still haunts me.