How fast can I jump up?

I have spent most of the day sitting and reading, sitting and watching a Homicide Hunter: Joe Kenda marathon I got sucked in to, surfing around on the Internet and trying to get motivated on this Monday, a day that feels like Sunday. I have not done much moving at all. However, just a few minutes ago, I moved. I moved my leg up to rest on a stool on which I had placed an iced sparkling water drink.

And, yes, my heel nudged the cup and down it went. I didn’t see it happen because I was I staring at the computer screen. One split second later, icy liquid and half melted ice flowed down my leg that had rested on the stool. There might have been cursing. Carelessly tossing the laptop to the side, I jumped up with a scream and discovered I had a skirt spotted with liquid and, under it, soaked underpants. That is probably too much information. Fortunately, I was alone in the room and so no one will ever know. Uh, maybe I should have thought this through.