Blatantly Rude
Once I was walking outside of the mall and saw some young teenage girl throw a milkshake into one of those post-office thingies (you know the big blue things where you put mail in).
I told her to freeze and grabbed mall security, who quickly summoned the cops. Not sure what the girl was charged with, but I’d never seen someone do something so blatantly rude and illegal. Who knows what got ruined in that mailbox because that girl was too lazy to find a proper trash can!
Story credit: Reddit / carolineobviously