Mel Marshall - Two-way sisters

That's funny, she thought. Here are Dave's briefcase and coat. Also his shoes, socks, pants and underwear. What's this? He wasn't supposed to return until tomorrow. Shit. That meant she and Bobbi wouldn't be able to have any more of their girly fun. But why are all his clothes here in the kitchen?

A sudden, exciting suspicion grew in her mind. She jumped up from the chair and went to the sink, looking out of the window and over to the bedroom. Sure enough, there they were! She saw Bobbi hunched over her husband, her mouth at his crotch and his mouth at hers. They were twisting and humping together. As her sister's head drew up, she saw part of the length of Dave's white cock emerge from her mouth. Then her head bobbed back down and his prick disappeared.

My God! My husband and my sister are fucking each other! A twinge of jealousy passed through her. Then it came to her. Her feeling was not one of jealousy – it was disappointment because she wasn't there with them getting her kicks! And she had wanted to manipulate the situation into being, make it happen when and where she wanted it to, and with her as part of it. It was obvious to her now and she felt herself relax with the realization.

It wasn't too late, though – she could still get into their sex fun. But she could see from their frenzied movements that neither of them were too far from coming. If she went in now, she might just ruin everything. She knew how Bobbi felt about making it with guys, so she must have had to overcome a lot of her resistance with Dave to go so far as sucking his dick. But then, Dave could be very persuasive when he wanted to be, and he would know how to handle the reluctant young girl.

A liquid tightness was gripping Dianne's loins as she watched the obscene show. She could get the details later, but right now her twat was beginning to throb insistently. She decided to wait a while before she went into them, but it wouldn't hurt in the meantime if she played with herself a little. In face, she could just take her clothes off and add them to the pile that was already on the chair.

She continued watching the couple avidly as her hands fumbled with her clothing. Her hands went to cup her heaving breasts lovingly, and she found that the nipples had already hardened to thimble-like protrusions that made her quiver as she touched them. The soreness was rapidly vanishing from her cunt and was replaced by an electric tension.

This was something else! Her husband and her sister giving each other blow jobs! It was like watching a dirty movie, but this time she knew the actors.

Now the couple's movements grew more frenzied. Dianne wished she could get closer to see better, and also to hear their cries as their pleasure built to a peak. Dave's prick was almost completely uncovered as Bobbi lifted her mouth to its tip. Dianne could see the spit-slick white cock gleam before her sister's mouth covered it with another piston-like downstroke. She knew Dave's movements well from long experience, and she could tell from his frenzied jerkings that his climax was not far off. Her sister's head was flashing up and down now, almost mechanically. Dave's face was covered by her pussy.

There! Dave's arms and legs shot out spasmodically as he bucked his hips up at Bobbi. Her cheeks went concave as she sucked at his spurting cock.

Dianne moaned as she imagined the luscious cream spurting into Bobbi's greedy mouth. Her finger searched for her fun button, but it was well-concealed in the slippery folds of her vulva. She continued sliding her fingers up and down her burning crease as she watched Bobbi's buttocks jerk and quiver in what had to be a volcanic come.

Now, she thought, now is the time. She felt driven by the roaring sexual fire that aged through her body. She turned away from the window and walked into the living room, through the hall, and into the bedroom.

Dianne stood in the doorway for a moment before Bobbi was aware of her form out of the corners of her eyes. Dave's cock dropped suddenly out of her mouth as she jerked her head up.

"Dianne!"

Dave was lost in his pleasure, eyes closed, when he heard Bobbi's cry of surprise. He turned over quickly and looked at his wife, who stood at the bedroom entrance with her hands on her hips.

"So!" she exclaimed in mock anger. "I come home after a difficult afternoon only to find my husband in bed with my best sister!" She tried to look stern.

From her tone and the look on her face, Dave knew she was joking. But Bobbi didn't.

"Dianne, please don't be mad. I…" The incongruity of her sister's words and her lack of clothing suddenly struck her. "Shit, you're buck naked!"

"Of course I am, honey." He went over to the big bed and sat down. "I happened to be passing by, and I caught part of your act. It looked like so much fun I thought I'd come in and join you." Her flippant tone was an attempt to cover up her eager lust.

"You mean you were watching us all this time?" asked Dave.

"I don't know about all of it," Dianne replied, sitting down on the other side of Dave. "I saw Bobbi going down on you. I saw you both pop your cookies, and I liked what I saw. But Bobbi, I thought you told me you didn't want to have anything to do with these nasty rascals. So what's the story?"

Bobbi started to say something, but Dave cut in. "It wasn't exactly her doing. It didn't take me as long as Phoenix as I expected, so I got to come back early. Didn't seem like there'd be much point in going to work for just part of an afternoon, so I took a taxi home. I thought I saw you heading for the bathroom, so I thought I'd surprise you. I didn't know it was Bobbi instead of you until-until it was too late."

Dianne ran her hands over his chest and over his stomach, finally letting one stroke the rubbery cylinder of his cock. "Doesn't look to me like it was too late at all, lover."

"I was so different, sis!" Bobbi interjected excitedly. "He came into the shower and his cock was standing up so nice and proud! We washed each other and then we came in here and he showed me how to suck him! It was as good as doing you!"

Bobbi realized sinkingly that she had lost her head in her excitement and revealed to Dave what she and Dianne had been doing, exactly as her sister had asked her not to. She reddened as she searched Dianne's face for a clue to her reaction.

"What's that?" Dave asked.

Dianne noted her sister's consternation. The poor girl had inadvertently let the cat out of the bag. Dianne sympathized with her.

"Bobbi, honey, don't you worry. I wanted to tell him anyway. There's no sense feeling bad about something like this. It's a natural thing that can happen between any two adult women."

"Jesus, you mean you two have been getting it on together?" Dave was surprised – Dianne had always had tendencies in a lesbian direction, but they had never seemed very strong.

"That's right," Dianne said.

"How long has this been going on?"

"Just since yesterday, that's all. Don't worry – you know I wouldn't keep something like this a secret from you." Not for very long, anyway, she added to herself.

"I'm glad. And I'm glad to know you two could get together. What's more, I'm happy we're here, all together. You know, Bobbi, I've had a lech for you ever since you started to fill out your clothes."

"Really? You mean it?" She had gotten her fill of lustful stares and suggestive comments on the street and in stores, not to mention clumsy fumbles, but Dave's naked admission had a different ring to it. She was flattered because she had figured that he just thought of her as his wife's kid sister.

"Hell, of course I mean it! And you two can make it together as often as you want. Just let me in on the fun, that's all."

"It's true, Bobbi. If you don't believe him, just take a look at his cock!"