Spankings and satisfaction

Why is it that with spankings, as with sex, the more you get the more you invariably want?

I've had a bit of a dry spell recently for health reasons, and at the moment I feel like I have a lot of catching up to do. Both my lovely mens are doing their best to keep up with me, and are making me a very happy girl in the provess :) But when I'm not in their beds, I invariably end up at my computer reading spanking stories instead of working, and sighing with frustration. It's ridiculous. I've had sex twice this morning, been spanked over the knee, with both hand and Mr C's evil wooden hairbrush ... and although by the end of it I was sobbing and sincerely begging him to stop, a mere few hours later I still want more.

We're staying with kinky friends this weekend, which should be enough even to satisfy my appetite for play. And I'm sure once I'm there I'll be considerably more nervous. But in the meantime, I'm just aching to be upended, to feel the bite of the cane or the sting of the strap.

The more spankings I have, the more I think about being spanked ... and the more spankings I want. Is this just me making up for lost time, or a more general principle? And why can I never seem to remember how much I want it when I'm bent over and waiting for the first stroke?