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

[fanw.livejournal.com]

Back when people used to call me "myf" or some other abomination, I got used to turning around whenever anyone yelled anything that might conceivably be an approximation of my name. "Yvonne" "Biff" "Muffy" ... it got kind of bad.

[ukelele.livejournal.com]

Did you encounter a lot of Muffys?