That night, I exploited my roommate's absence by catching up on my homework. I was engrossed when Stacy appeared at my door. As usual, she wandered in without being asked. I feigned weak disapproval. I never quite forgave her for that prank she pulled my first week there. But this was easy to overlook at the moment, since Stacy was dressed in a pale blue nylon satin tricot islander gown and panties. The gown's fabric was gathered at the neckline into soft pleats that draped enticingly over her breasts, torso, and thighs. The low, round neckline of stretchy lace was loose enough to sometimes slip off a shoulder, or provide a teasing expose' of additional bare skin. But then she sat right on my bed and started looking through my pile of class notes. I kept sneaking looks at her, pretending to be worried about my notes, but I was more interested in how her sweet breasts showed under the silky nylon of her nightgown. She caught me looking, but I covered by telling her not to mess up my piles of papers. She answered by whipping one of my pillows at me. I threatened, 'Do that again and I'll put you over my knee!' so she threw another one. I went over to the bed and and we wrestled, though I mostly tried to get in plenty of body contact. Stacy didn't mind, but just giggled and fought back. At one point she was about to crawl away, so I grabbed the waistband on her white panties. I was really surprised when she didn't stop but just wiggled right out of them. I was left just holding the silky things when she turned and attacked me. I was really turned on by this, so I sort of let her have her way. In no time she was sitting pantyless on my chest. She pinned my arms to the bed and said, 'I gotcha now!' With Stacy sitting on my chest, I let my eyes wander over her breasts, hovering beneath their veil of silky nylon, not far from my face, to the hem of her scooped light blue nighty. I could see soft curls of dark hair below her hem, and feel them tickling my chest. Stacy smiled down at me for a minute, then leaned down and lightly kissed me, darting her tongue into my mouth. I clasped the cheeks of her rear and pulled her forward until my face was directly under her. Instinctively Stacy lowered her pussy onto my outstretched tongue and then wiggled back and forth over my mouth, nose, and chin. She squirmed around, enveloping my rod, wriggling in the most complex, obscenely imaginable ways. Finally, there was a shout of lusty joy from Stacy as her rockets ignited and she went off into orbit. She was shaking with glee, whispering the most delicious ecstacies in my ear whenever she'd remove her tongue for a moment. I kept riding her, slowing a bit. Finally, Stacy pushed gently at my chest. When I rolled sideways, she moaned, and the most beatific smile lit up her face. Slowly, Stacy nestled herself between my legs, moving in for closer contact. Starting almost at my anus, Stacy gently ran her tongue up to my balls, mouthing them, and then moving along the length of my rock-hard prick. A tingling sensation surged throughout my groin as I fought to hold my upcoming explosion. Over and over she repeated it, licking me like a long, thick lollipop. Soon my nerves were singing. Minnows of delight darted up my spine, tingled my neck. And finally the momentous cataclysm began, the peaks of my feelings, stored up for this moment, and finally rising like some mighty geyser bursting from the bowels of the earth. I let out an unalloyed bellow and exploded.