I've always been afraid of being alone for a long period of time. That's kind of pathetic for me to say, because as a bigger, fit guy I don't really have much to worry about, but my upbringing really made me fear loneliness.
Bees scare the hell out of me. Just this last year, I sat outside of the dugout for an entire playoff game because there was a bee flying around inside.
Really long lines piss me off, and kind of intimidate me. I had a dream about being stuck in an endless line once, and it scared the hell out of me.