"Oh, yeah," snarled Max, his cock easily sliding into my cunt, which was still oozing and slippery from his tongue. Having him inside me so soon after my last orgasm made me ultra-sensitive; I could feel every inch of Max probing my slit, from the rounded tip that pried open my lips to the thick, veiny shaft that stretched my insides and filled me up. Once he was securely inside me, he reached around and fondled my tits, grabbing them like a wild animal, watching them slap against each other in the windowpane as my whole body was rocked by the force of his thrusts. I closed my eyes, all the better to enjoy the pounding sensation, and was just beginning to feel a tingling in my arms and legs when Max stopped dead, absolutely still. I opened my eyes to see what the problem was, and that's when I saw them. On the other side of the glass was a young couple, about our own age, holding hands and staring at the shop window with an expression on their faces of purest shock. Or was it shock? Even as Max and I watched, their faces registered not horror but intrigue and then desire. They exchanged a glance and drew closer, touching each other as they watched us.
"This is it, baby," said Max, pulling his dick almost all the way out of me and preparing for one enormous thrust. "Let's give them something to fucking look at." And he speared me so hard with his cock that I threw back my head and let out a roar of pleasure.
I let my eyes skim over the couple on the other side of the glass. With her jacket open, the woman had absentmindedly begun to fondle her breast, and I could see her nipples stiffening beneath her T-shirt. Without taking her eyes off me, she grabbed her lover's hand and pulled it to the crotch of her jeans. He pressed his dick into her back, reached around, and started to rub her clitoris through the denim. He didn't even attempt to touch her skin, but I knew from the expression on her face that he wouldn't need to. I knew what she was feeling: that state of arousal when you're so turned on that the slightest stimulation can trip you over the edge into an intense, searing orgasm. Licking my lips I looked into her eyes, and she returned my gesture, the two of us exchanging this experience, making each other hotter and hornier, neither of us daring to break eye contact. Without turning to look, she grabbed wildly at the man behind her, making a pulsing little starfish with her hand as she reached desperately for his cock.
Glancing at Max's reflection in the mirror, I saw his face twist with raw, animal lust. He looked so primal that just the sight of him made my cunt spasm around his hard cock, and I watched his features contort with pleasure. I saw Max slide his thumb in his mouth. Knowing what that meant, I shivered with anticipation. Max flexed the lubricated thumb for me and everyone else to see and then deftly slid it into my ass, pushing my face and tits down into the bed so that our audience could see my back and my butt cheeks, making sure there was no room for mistaking just where his slippery digit was. This sent the couple on the other side of the glass to new heights of arousal as they watched his thumb disappear into my ass. The bedcover muffled my screams as the pleasure became almost too intense for me to take.
The girl finally managed to tug the guy's dick free from his clothes. It bobbed bolt upright, thick and fat between his legs. Her hands closed around the length of his hard-on, and he tugged on his balls.
"Look at his cock," whispered Max. "Look how hard we made him get. Your tits. Your ass. Me fucking you. Me with my dick in your dripping cunt." Max's words were like dynamite to me, but I was too far gone to answer him, overwhelmed by what I saw and felt. My body alternated between vivid sensations and numbness as Max's dick rammed my G-spot over and over again.
The guy's hand was now down the front of his girlfriend's jeans. Maybe I was wrong about her; maybe she just wanted to feel his hand on her clit. I watched as his knuckles moved beneath her waistband. She was groping and grasping at her own tits, playing with her nipples under her T-shirt with one hand and tugging at his hard-on, massaging the length of it with the other. Max and I were transfixed by the man's dick, which seemed to grow bigger and bigger by the second. Through the window I could see the tip of his penis begin to twitch and moisten. I thought what a shame it was that I couldn't reach out and take his cock in my mouth, suck it dry of spunk.
Max had had his thumb in my ass the whole time he was pumping my tingling pussy. A shiver began in my pelvis and flowed along my limbs, numbing my arms and legs. Heat was radiating from my body as Max felt for my nipples and pulled my tits hard. I could take no more. It was time to submit to my orgasm. I yielded to a violent surge of contractions that sent pins and needles rushing all over my body. My pussy hugged Max's dick so tight that he reached his second climax in five minutes. I felt one, two, three sharp thrusts inside my still spasming pussy and then heard Max exhale deeply as he let go of my breasts and grabbed my hips to steady himself. I milked every drop of spunk out of that dick, and when it was finished, our juices mingled, spilling out of me, sticking to the front of Max's thighs, the pale liquid running down my legs and ass.
As our orgasms subsided, the girl on the other side of the window also came, and hard. A damp patch appeared between her legs and spread, darkening the fabric, as her knees trembled beneath her. When the guy felt her juices gushing onto his hand, he came, too, his spunk flying out of his dick in a perfect arc before hitting the window inches from my face.
I got off the bed, and, with my naked body pressed up against the cool, cool glass, pretended to lick his jizz off the window from the inside. The woman moved toward me and licked it off for real, hungrily sucking up her boyfriend's spunk. I saw her tongue and lips moving as she slid her mouth across the glass, and I mirrored her movements, miming a kiss. When her hands touched the glass where my breasts were, it was as thrilling as if she had placed her flesh against mine. She gave my nipple an imaginary flick, laughed, and then she and her lover zipped up, linked arms, and walked off into the night, glancing over their shoulders at the shop window before turning a corner and disappearing from our lives forever.
Max and I enjoyed one last intimate tender kiss in the shop window and returned to the shop to dress.
"That was the best present anyone's ever given me," he said, helping me back into my dress. "I don't think I've ever come so hard in my life."
"Me, too," I said, buttoning up his fly. As satisfying as the experience had been, my mind was still racing. I kept thinking about how sexy it had been when the girl and I were both pressed up against the glass. The fact that she was an anonymous stranger was the big turn-on, but part of me wished they had stuck around, that we had gotten to know them. We could have hooked up, all four of us. Something even more intense and amazing might have come of it. Before we left, I smoothed over the bedcovers and reset the security alarm. No one would ever know we had been there.
I went into work the next day and spent a restless morning daydreaming about what I'd done the night before. In the cold light of day, it didn't seem real. It seemed like an incredibly erotic film I'd watched rather than an experience I'd actually had. But a faint white smudge on the outside of the shop window reminded me that my public fuck had been very real indeed. All day, I made excuses to look at the shop window, focusing on the tiny smear and remembering the man's dick as he shot his spunk at the window and the girl's lips as she licked it off. My pussy pumped and swelled every time I replayed the image of it in my mind. I couldn't wait to get home, eager to take Max to bed, where we'd fuck again, retelling each other the most sensual parts of last night's adventure and talking about what it would be like to fuck in front of another couple again, and maybe have them join us. I watched the clock, counting down the minutes before I could be with Max, touch him, talk to him.