Oddly, it's heights. I say "oddly," because I never used to fear heights, and in fact enjoyed rock climbing as a boy. But I'd always had a terrible phobia of needles. Several of my childhood dentists (I didn't keep one for long...) ended up on the floor after producing a syringe. Now, I don't mind needles at all... But get me on a ladder, and I'm shaking like a chihuahua. Weird.

---Lepus Rex