Two fingers grew out of my skin, right above my crotch.
Zoey had forced me to wear a loose dress and a black string, I now understood exactly why she wanted me to. I had an idea at first. I thought she'd wanted me to walk around in sexy underwear without anyone noticing, perhaps she would then casually lift up my dress to show my crotch to the world. I figured that would automatically expose our secret as well.
But I hadn't anticipated this.
I had never really been into public humiliation, if you could call it that in some way. On the other hand, Zoey did manage to make things a lot more exciting, and it wasn't like she didn't suffer in part as well.
Her two slender fingers gently slid over my two lower lips, and I already felt some warmth flow into my crotch. My cheeks reddened. Crossing my legs didn't help. It prohibited Zoey from intruding me through the front, but she had another set of fingers to her disposal, and just grew them out from the small space of skin between my asshole and my vagina.
I felt how she slowly opened my lips and felt around the contents, and I drew a hitched breath. My concentration was already lost. We arrived at a bus stop, some people entered the vehicle, some people left.
There were three more stops before our own.
A finger slipped through my crossed legs and managed to reach my clitoris, and I shivered at the touch. I crossed my legs tighter, but it gradually became harder to focus, and I felt my strength slip at each tweak or rub.
Another finger grew out from behind my entrance, and I felt how all three of Zoey's fingers shamelessly slipped into my entrance. It wasn't fast, it wasn't rough, but my crotch was already dripping wet, and the teeny tiny string I was wearing couldn't manage to keep my juices from leaking out and onto the cloth of my dress.
As if reading my thoughts, Zoey pulled a thumb between my crotch and the black string, pulling it away slightly.
I felt how the bases of her index and middle finger slowly attached onto the skin inside my pussy lips, and started rubbing my sex from there, causing some more leverage. Now she could reach just a bit further into me, with just a little more intensity than before. She knew exactly where my G-spot was, from experience of course, and made it increasingly tougher for me to maintain my facade around all the other passengers.
She stretched out the string just a little further, and I slowly uncrossed my legs, finally giving in to the pleasure. My breathing was heavy and irregular. A passenger, who'd come to sit beside me, was starting to take glances at me.
Zoey let go of the string, it smacked against my crotch, hitting bulls-eye on my engorged clitoris.
I gasped in shock, my neighbor turned to me, confused look on his face. I stuttered an apology and decided to just leave at the next stop, walking the rest of the route home.
_____
Upon leaving the bus, nobody walked out after me, and the path was empty, devoid of any intelligent life. All I could think was 'Thank god,' but it came out as: "Bummer, now you have to walk all the way home. With me."
She hadn't stopped her thrusts, and through the back of my dress, I desperately tried to get a hold of her penetrating fingers. There was the sound of constant wet smacking coming from my dress, and I was genuinely scared somebody was looking at our antics.
I stumbled my way forward. Leaning against every lamppost on the way, legs clutched. Eventually I sat our masturbation session out on a green wooden bench that said 'Wet'.
She continued rubbing my clit, but stopped thrusting my entrance with her finger while I desperately sought penetration as I neared my orgasm. I clutched the front of my dress with my own to hands and clamped my jaw shut.
Shivers went up my spine as I felt my pussy being penetrated once more, but this time from the inside. I sensed an odd taste at the back of my tongue, and felt a rough surface licking my even rougher G-spot. The organ was long and flexible, and I felt how it found each and every single of my most sensitive spots.
My muscles twitched, then spasmed, and at last, my strongest orgasm yet. Spurts of juices jetted out of my crotch, making even more of a mess of my already ruined dress.
I half sat, half laid down on the green, wet, bench, just grasping at what just happened to me.