I remember one time, in a hotel, my friend started flickering the light at like, 2am, and it scared the shit out of me. I hid under the covers, and I was 18 at the time. I'm not afraid of the dark, but the flickering scared the SHIT out of me.
What other fears do you have (that are a bit more rational)?
I have anxiety disorder, and I am afraid of having panic attacks. But that's pretty much it. Ohh, and roaches crawling on my face at night.