"Let's go," I said before she changed her mind. "We'd better not go together. You go first." And Susan went. Just disappeared out of the crowd. She was serious alright. And I found myself amazed at what I'd got myself into. Suckling at a pair of the most gorgeous breasts, and I hardly knew the woman. By the time I got to Susan's apartment two floors up, she had changed from cocktail dress to house coat. She showed me the pump. "This is the apparatus. Can you imagine me using this when I have a real man volunteering?" She sat on the couch and dropped the house coat to her waist. My cock had been getting more and more droopy as I wondered what I was letting myself in for, but at the sight of two thirty-six D tits thrusting themselves out at me begging to be sucked it sprang to life and made a bold statement inside my pants.
I fell to my knees, and Susan opened her legs so that I could shuffle closer to the couch. I just had to get my hands on those two glorious globes. They were larger than Susan's dress had revealed, drooping a little, presumably because of their load of milk, and deliciously soft in my hands. I fondled them and squeezed them and pressed my face between then to breathe their perfume, and then pulled back to gaze at the swollen tips. The aureoles were puffed out from Susan's breasts like little conical cushions, with the nipples red and stretched smooth and projecting as large as fingertips.
"Suck this one fist," Susan said, and thrust her left tit into my mouth. And I sucked at the nipple, and I nibbled at the aureole, and I sucked, and I drank, and as long as I sucked the milk trickled hot into my mouth. Susan gasped, and sighed, and caressed my head and my neck, and I realized for the first time that this was not for her just a matter of getting rid of the milk, but an experience as sexually exciting as it was for me. When the milk supply dried up Susan kissed my mouth and I understood that this was the end of the evening's excitement for me. As the human pump I would be expected to perform again at eight the following morning.
Back in my apartment I relaxed and consoled my still rigid cock and revelled in reviewing the evening's pleasure. When the door chimes sounded later I wanted to ignore them, but Elaine's voice demanded entry. She was giggling as she entered the room "You dirty old man! You've always pretended to be such a goody goody, but Susan called me and told me all about it. She loved it, and you didn't take advantage of her, and you're going back again tomorrow, and you loved it too, didn't you?" I should have known those two could keep no secrets from each other. But I was surprised how excited Elaine was. I would have expected her to be critical. "You're a real quiet one, you are. You hardly know Susan, and you seduce her into letting you undress her and suck her tits."
Remonstrations were no use. "Of course you seduced her. It's always the man who leads the way. What I don't get is why you go for a stranger's tits when you've got a perfectly beautiful pair right here."
Elaine pulled off her sweater, and flung it to the floor. She was naked to the waist. Two breasts that I hadn't seen since her early teens were standing out firm and proud, fuller and firmer than I had ever realized when I saw her fully clothed. I wanted to lunge at them and grab them. But this was my kid sister. I just gulped.
"OK, so I'm your sister. That's what you're thinking. Don't my tits look as nice to suck as hers? Someone else is going to suck them one day, so why not you? It's part of a brother's responsibility to give me some sexual education." She walked across to me and sat astride my knees, her tits close to my face. They were rounder and more upstanding than Susan's, and fully as large. The nipples were not so swollen, but pert and hard, and Elaine tweaked them inches from my face. "Suck them for me, darling, they need it just as much as Susan's, even though there's no milk in them. I want to feel your teeth on them, pinch them, twist them, hurt them, they need you so badly."
Elaine pressed one tit against my mouth, and instinctively I opened my lips and took the hard nipple in. Again I sucked, and nibbled, and caressed and squeezed, but this time Elaine was crying out. "Harder, bite me, hurt me, don't stop, I love it. You're going to make me cum." And she did cum, sitting an my knees, heaving her whole body from side to side but never letting her nipples fall out of my mouth except to change from one breast to the other.
Next morning the phones had evidently been busy again. "I didn't want to frighten you away," Susan greeted me. "You seemed so sort of embarrassed, I just let you suck all the milk out, which was what you came for. I would have loved you to go on longer. I had to masturbate myself when you left. because you excited me so much and you hadn't made me cum. Darling, finish me off this time and make me cum the way you did Elaine , please. And I want to suckle you properly this time, like a baby. Lie across my lap and let me hold you to my breasts."
She sat on the couch, and I lay across her lap while she held me in her arms. She pressed me to those soft hot tits, and fed me, and crooned to me, and caressed me. But this time she opened my shirt and played with my nipples, and caressed me down to my belt, and unzipped my belt, and unzipped my fly, and gently pulled out a prick that was stiff and swollen and hungry to be played with. And while I sucked and chewed at those turgid nipples Susan played with my prick and caressed my knob and stretched my shaft. This time I didn't stop sucking when the milk was drained dry , and as I sucked Susan cried our louder and more urgently, and eventually she was cumming, the body that was clasping me heaving and writhing in an uncontrollable orgasm. And very soon the random playing with my prick had become a practiced masturbation that brought the sperm spurting out of me till I too was drained dry.
Elaine was at my apartment in the early afternoon. She had been on the phone again. "So, we're making this a game of catch-up are we? You're not content to have your jollies just playing with tits, you have to get your own personal satisfaction. So now it's my turn, and I'm going to get ahead of Susan this time." She pulled her dress up over her head, and I saw my little sister more naked than I had ever seen her before. In fact completely and totally naked. I forgot she was my sister. I forgot all the taboos. I forgot everything but the naked loveliness in front of me, the magnificent tits that I had already enjoyed, the slim shapely body and the long slim legs, the parted thighs that led up to the wide parted labia and a wet fleshy pussy. As I looked at the open wetness I was aware of thinking that this horny chick had already been masturbating to bring herself to this state. And then my sister was hauling down my pants and my shorts before she pushed me down onto the piano stool and sat astride my knees. My rigid rod opened up the tight entrance to her cunt, and then her tit was once again forced against my mouth. "I still need your teeth on my nipples," she said urgently, "and your hands all over me wherever you like, but now I want my big brother's cock where I've always wanted it but you were too chicken-shit to put it. Fuck me and suck me, all at the same time, and I'll cum for you whenever you're ready ."
My kid sister had always been bossy. So I did as I was told. I fucked her and sucked her at the same time. And when I started to pump her tight vagina full of hot creamy cum she did as she had promised. She came for me. And because the sword impaling her was still stiff and hard she came again, crying out with ecstasy. And then she came again. And I stayed hard because her vagina was still narrow and tight and caressing every part of my prick. And also because I knew this was something I should not be doing. I was screwing my own sister.
As I expected, the phones had been busy by the time I next visited Susan. "If Elaine thinks she's going to stay one up on me, let her top this," was her greeting. I thought "THIS" was the fact that when she flung the door open for me she was stark naked, posing specially for me so that every detail of her sexy body was open for inspection. And I do mean open. But Susan had more in mind. "Come with me," she ordered. She led me into her bedroom. I had never been in a woman's bedroom before. Of course, everything about it was feminine. Except for the large mirror on the ceiling.. I was still looking around in a bemused state when I became aware I was being undressed.. I was getting used to this, and I liked it. By the time I was as naked as Susan my pole was erect and ready for action. But it was not to be needed, it seemed. "Lie down," was the next command, so I did just that. It could only lead to good things.