Let me tell you a great way to ruin a relationship, or someone's reputation in general. You find the person's initials. You graffiti them [i]everywhere[/i], and you accompany them with some kind of racist slur or just something nasty. People will be all "who the fuc­k is doing this shit?!!" And then, they figure out who the initials belong to... Bonus points if you emulate their handwriting. I've done this strategy before, and it works wonders.