Barely conscious. 3 AM, or that's what my bleary eyes saw on the glowing big hand and little hand of my watch. I'd been sleeping for the last couple of hours as the train sped through the northern reaches of the Midwest taking several hundred of us from Chicago to points east. In my case, back to New York after a conference. Hours of talk and then the rush to make the Lakeshore Limited. I enjoy riding trains and if I'd had my wits about me when I planned this trip I would have booked a sleeping compartment instead of ending up scrunched up in a regular seat. At least there was no one sitting next to me. The people in front departed somewhere in Indiana and the kid behind me who had been jumping around since we left had completely worn himself and his mother out. Just me and that young couple right across from me. Not a very crowded train, really. I moved my head around to check out the young couple. In the dim light I could see they hadn't worn them- selves into slumber, they were clearly making out now that everyone else was asleep. He, in jeans and T-shirt, 18 or 19, longish blond hair and a couple of ear rings, moderately well muscled. She, wearing one of those long but somewhat diaphanous Indian skirts, a T-shirt, some leather necklaces, a Bjoran ear ring mostly out of sight in her long dark hair. A couple of Dead Heads, actually, going back to somewhere in western New York after seeing "the show" in some suburb of Chicago. I'd talked with them as we boarded the train and came to the conclusion that she (Emily - prevet student at Cornell) was the brains of this couple while cute Rob (not clear what he does) sort of tags along. What Rob does do, at least right now, is lick, kiss and nibble Emily's neck while his hand is out of sight up her dress. The dress is mostly scrunched up her smooth, slightly furry thighs, one of which is airborne with a foot wedged against the seat in front of them. She moans softly as his arm moves, suggesting the slow finger-fucking she is receiving. Her hips move slowly against his hand, and although I can only make out part of it, I'm pretty sure she is whispering instructions into his ear about using his thumb to rub her clitoris while his middle finger probes her wet vagina. Rob moved his free hand to her chest, pushing her T-shirt up over her breasts and then moving his mouth to her breasts, licking and sucking each nipple in turn. Emily made muffled whimpering noises as she squirmed against and under him even more. A hand grabs and rubs his back, another slides through his hair, then on to the back of his neck, kneading and squeezing. Rob's hand is moving more insistently now, and he appears to have located Emily's g-spot as her level of pleasure appears to have clicked up a notch. She seems to be trying not to make too much noise, but the sounds she makes and the number of things she murmurs, moans, grunts and whimpers suggest that under more private circumstances she'd be pretty noisy. Even so, I can hear her whisper to Rob, "C'mon baby, that's it...just like that...right there, don't move.. just like that sweet baby...you're gonna make me come if keep doing that....just like that... just like...oh, now, bite it now! Rob's teeth clench on her left nipple, Emily's back arches, her legs shiver and convulse and very heated, very desperate and very irresistible groans catch in her throat and then slip from her mouth. She continued to come for more than a minute until she reached down to take Rob's hand out of her and kissed him deeply. They cuddled and squirmed for several minutes, during which I heard Emily laugh and say, "Hey, I told you it was there, you just had to find it." After awhile and some more petting Emily twisted around then moved him into a slouched sitting position on the seats and slid down between his legs. I heard the unmistakable sound of a zipper and the sound of denim against skin as they slid his pants off. He was already hard, which led to a momentary pause in getting his pants past his hard-on. Emily knelt between his legs, picking a couple of stray pubic hairs off his cock before she began to slowly lick it. Long, slow licks from the base to the tip, underneath and on the sides. Rob let his head slide back but occasionally glanced down to watch. For her part, Emily kept an eye on him, enjoying her ability to turn him to oatmeal. She moved up slightly, took his cock in her mouth and began to suck him. She didn't waste any time, sucking him slowly but deliberately, hands and mouth, her eyes locked onto his. Before long she was making the slurping and smacking sounds that can only come from great head. He was whimpering and squirming and even after the first few minutes it looked like he wasn't likely to last very long. She was leaning against him using the same arm whose hand was stroking his cock. Her other hand had disappeared beneath her, to finger her still moist pussy. Emily glanced in my direction and our eyes met. I was trying to look at least passably asleep but she saw through me. I was slightly startled since I wasn't sure how much they'd appreciate my watching, but from the mischievous look on her face, maybe that's what she was looking for. She stopped momentarily to stroke "shame on you" finger movements at me, and then kept eye contact on me as she went back to sucking Rob's very hard cock. For the next several minutes, her eyes went from Rob to me, and the hand rubbing her clitoris seemed to move a bit more insistently. She continued to stroke him, but took her mouth away and asked him, "OK Robbie, where do you want to cum? Want to cum in my mouth?" - with that she took him back into her mouth again and gave him five seconds of especially nasty sucking, the movement of her lips and tongue very clear - "Or do you want to cum on my tits?" - she took his cock and slid it across her bare chest, over her breasts, and then between them. "I'm not sure.. I'm not...so good...gonna come soon," Rob drooled. "Aw, c'mon, we always like it when you come on my breasts. You'd like to spurt on my tits, wouldn't you?" With that she took the hand that had been busy rubbing herself, took a wet finger and slid it into Rob's ass, while giving him strong base-to-tip strokes with her other hand, holding his twitching rod against her breasts. This was much too much for young Rob, who moaned loudly, arched his back and came. Really came. Spurt after spurt of warm musky jism shot from his young cock all over Emily's bare breasts. The second spurt was energetic enough to hit her on her chin, causing her to flinch slightly and giggle as she whispered, "Yeah, baby" repeatedly in support of her lover's Peter North-class output. After five or six spurts she slowed her stroking and he began to settle down. She took her lover's cock and used it to spread his cum all over her breasts and stomach. Emily crawled up over the still-glowing form and straddled him. She reached beneath her, took his still-hard cock in her hand and placed it where she began, slowly impaling herself until she hit bottom. Slowly, at first, she rode him, grabbing his head from the base of his neck and placing her breasts at his mouth. Rob, being eighteen, was capable of more; and, Rob being Rob, was apparently good at doing what Emily wanted. Then Emily turned her head to check on me. Her eyes met mine and she stayed with me while she slowly fucked Rob. She stared at the rather large bulge in my pants and smiled. I was transfixed watching her wonderful ass undulating and the muscles in her thighs flexing and relaxing as she ground her clitoris against Rob's pubic bone. His hands held her breasts as he sucked on them, his face almost buried in her. And all the time she looked into my eyes across that aisle, her pleasure as clear as day in her gaze. I watched as Rob bounced her up and down, her lovely head jerking forward and backward from his insistent motion. Then all of a sudden, I could see her eyes go unfocused, I saw her through her head back and there was a loud moan that escaped from her lips as she came for the second time that night. Rob sped up his bucking motion, and as Emily recovered from her latest orgasm, she brought her eyes back to mine. She rode Rob all the while looking at me, licking her lips sensually, making me go crazy. I couldn't help it, as Rob shot his come into this beautiful young girl, I did the same thing in my shorts. What a mess. I think that's what Emily was trying to do to me all along. After I cleaned myself up in the rest room, I found a seat in a car farther back, I really needed some sleep.