She smiled back at me. God, that smile transformed her instantly from merely pretty to truly beautiful. My penis twitched to life and quickly began to grow as I watched her; within a few seconds it was rock hard and sticking up above my abs. I saw her gaze shift from my eyes to my engorged dick, which was doing its little up-down dance in rhythm with my heartbeat. When she made eye contact with me again, her eyes widened and she turned her smile up to full wattage. Then she pointed to herself and cocked her head to the side as if to say Did I do that? or Is that for me?
I nodded, and put down my book. Still watching her, I moved my left hand down my body and grasped my raging hard-on. Her eyes followed my hand as I moved it slowly up and down my shaft. Her smile slowly disappeared, to be replaced by what looked like lust. She slowly licked her lips, and I began to jack off faster.
And then she turned and walked out of sight.
Shit, I thought. I was upset that we weren't going to continue our little voyeuristic interlude to its