A lot of things freak me out, and high on that list are spider bites. Because more often than not, they happen while you're sleeping which means that a spider was crawling around your bed -- on YOU -- in your pajamas -- while you sleep -- and then....oh...see, its just all too icky and scary to contemplate. You get the picture.
I have one right now, on my arm - all red and itchy and I. Can't. Stop. Scratching. It. This only means I'll be shaking out my sheets and pajamas for an hour straight tonight. Hate those 8 legged bastards.