You guys are gonna laugh at me, but seriously, buoys(those floaty things in water that mark where you're supposed to go or that this is a swimming area, dangers, etc) freak the crap out of me.
I mean, they just sit there, floating in that dark water where you can't see the bottom, attached to some rusty old chain and cement block for years. Ewww! Don't ask me why, but they bug me. I swear, if I was stranded at sea and the only thing nearby that could keep me out of the water and away from sharks was a buoy, I'd still prefer the water.
I used to be afraid of heights, but I kinda got over it. Umm, lemme see... Oh yeah! I'm also afraid of bees that sting. If one's nearby, I squeal like a little girl and run.