What is it about cats?

A friend popped in tonight, and amongst many other things, we spoke of the uncomfortable positions we find ourselves in during the night to accomodate our cats.
As I was lying on my stomach to do some pre-bed-time Internetting, and Kitty managed to sit herself down on my legs. My feet are now sleeping (although the back of my upper legs are nice and warm, so that’s a plus) and my whole position is quite uncomfortable, yet, I’m lying here typing, just to have something to do, and contemplating about my situation, just not to disturb her.

I know she won’t hold it against me if I move, but I would feel horrible to make her get up.

I’m a wuss! :-)