Have you ever had that feeling that a spider is crawling on your skin?

And then you look down and there's no spider there, it was just some kind of tactile illusion, such as the air conditioning hitting your skin in just the right way to make one of the hairs on your arm move just the right way to trick you into thinking that. Or perhaps it's your clothing brushing your skin a certain way.

Or maybe you're lying in bed, and the bed sheets brush your skin just the right way to make it feel like there's a spider there. So you panic and turn on the light on the nightstand, only to discover it was nothing.

Maybe you've done this a hundred times over the course of your life, because you've got this serious squick about spiders. But every time, it's always been nothing.

But then, there's that one time when you feel that sensation while you're in bed, and you smack your hand instinctively down on the spot on your arm where you thought you felt a spider, and you turn on the light to discover that there was in fact a disgusting creepy spider crawling on you and you weren't imagining it. And now you have to wipe up the mess with a kleenex.

And now you've got a serious case of the willies, and you can't go back to sleep because now you're creeped out by every slight sensation on your skin that even remotely resembles the touch of an insect, even if it's just an ordinary itch. So you have no choice but to sit up and post mindless crap to a BBS in the middle of the night.

Don't you just hate it when that happens?