A thing which is harmless but drives me perfectly nuts:

[moominmolly]

Sitting in a cafe where, all the way across the room, some people are having a conversation about someone named "Molly" who is NOT ME. No amount of talking rationally with my brain lets me tune them out.

Comments

[cacahuate.livejournal.com]

I hate that. Especially since there are about 20,000 other Mollys at my school for some reason, and I don't have many friends so they never mean me.