Like a certain noise or something.
Mine is the THX noise. I HATE THAT SOUND. It scares the living crap out of me every single time I hear it. My boyfriend and I went to watch Die Hard the other day, and I heard the start of the THX noise and I immediately jumped on the remote, paused it, muted it, and let it continue. I shook for about 5 minutes after because I just can't take listening to it. >_____<;
My boyfriend looked at me like I was an idiot. D:
So what silly thing are YOU afraid of?