It's my belief that when I have an healthy sexual life, when I think of a particuliarly "hot" moment I experienced, my pussy will "pulse", to show me that these thoughts are arousing... and that I want more.
It is a very hot thing to experience also: reliving a nice sexy memory and feeling your body responding to it.
My latest one was quite obviously sunday's: i was being spooned and we were discussing another sexual encounter i had with another guy. I was describing how the guy came all over me: my boobs, my face, even in my hair. The guy who was spooning me at that moment hugged me closer, grabbed my tits and hissed in my ear : "like a cheap whore".
That probably got me more turned on than anything I've experienced recently.
Oh... it just pulsed again...