Deborah sighed and rested her head against him for a moment. They were finally home, after a long day at the office, and she just wanted to enjoy those few minutes of quiet and calm, before she went inside, where Barbara was certainly still waiting for her. Sometimes, her step-sister irritated her, always keeping an eye on everything she was doing. For a moment she was lost in his glow, the deep, amber glow, that she found so reassuring, her fingertips were running across warm, soft skin that she leaned on. She wondered: Was anyone watching? Would they think her strange, to feel so sensual, almost right in public? Sure, it was late at night, and the street was dark and quiet, but ... what if someone was watching her?

And why did that arouse her so much? She wrestled with the feeling, while her red fingernails dug themselves harder into the soft skin. It wouldn’t hurt, would it, she thought. Just a kiss. Just a slight little touch of her lips. And before she knew it, her mouth already touched his smooth, sensually curved ... mmmmh...

He tasted like more. Like a whole lot more, and her hand wandered to her chest, almost by itself, and started to open the buttons of her coat, lightly touching her breasts as she did so. This must be a tease, he was teasing with her, with his presence, his strong, silent, comfortable presence, and of course, his handsome body. A body, she was not ashamed to admit, she had dreamt of many times, and which she touched, longingly, once more. How her breasts would feel against it, she wondered. Throwing a brief glance around, she hastily unbuttoned her blouse as well, until the bullet-shaped bra that held her breasts in place came into view.

Looking down at herself, she was pleased, once more, at how much more shape it gave her otherwise rather flaccid and unshapely breasts. Unlike Barbara’s, she thought, remembering the few times she had seen her undressed, and marvelling at the full and heavy set of tits that were still bouncy and firm, even without support. She envied her, and maybe wished a little bit to be able to touch her, just as she was touching him. The feeling confused her. Deborah, she’s your step-sister, she told herself. Step-sisters don’t touch like that!

Calmly, she stripped off the cone-shaped cups, until her breasts hung down freely, grabbing them with both hands and running her nipples against him. She shuddered, as she slowly traced his lines, in the cool, dark night, right there in the streets, feeling warmth still radiating from him. Crawling on top of him, she suddenly began to lick, carefully, along his most prominent features, while she felt his wing between her legs. And oh, did it feel good there. So good, she thought, that she wanted to feel more of it. Much more.

Her skirt slid up and she finally felt him stronger against her panties, pressing her pelvis hard against the line of the wing, and began to rub on it, back and forth, her breasts pressed against his smooth side. She began to curse the girdle that was keeping them in place, making it hard for her to take them off in the position she was in. But maybe that was a blessing, as she was already revealing much too much, in too risky a place.

Washing, she thought. I would love to wash him, give him a special treat, just from me. And without further hesitation, she relaxed her bladder and let her pee run down between her legs, all over the wing, still rubbing back and forth to make sure to cover it all. When she felt empty, she turned over and began to lap at the wetness that was running down his sides, slurping up her own warm water, enjoying every drop of it. You’re lewd, Deborah, she told herself. Lewd and strange and queer, and one day, you’ll be found out, but until then, you’re going to enjoy this.

“Deborah, you’re so lewd,” she heard a low voice behind her. Startled, she turned and looked straight into Barbara’s eyes, which pierced her through the cat-eye glasses she was wearing, her arms akimbo and her lips pursed. “So this is why it takes you so long to come inside,” she continued with a sound of reproach. “Here I am, waiting late for you to finally come home, and then my little sis just spends her time outside being lewd with my car!”

“I ... I didn’t ... I’m sorry, I swear I will never...” Debora stammered, looking down in shame. The moment of truth had arrived sooner than she had hoped.

“Well, let’s clean this up and then you’ll have to make some amends, I tell you,” Barbara said, and immediately continued her step-sister’s work and started licking up the rest of the stains off her Chevrolet’s trunk. Deborah watched perplexed for a moment, her eyes following her pink tongue that darted out between her ruby red lips, lapping at her urine like a cat would lap up milk. “Mmmh,” Barbara purred, “you taste even better than I thought you would.”

She leaned over and softly pressed her lips on Deborah’s mouth, kissing her cautiously, sharing the taste with her, mixed with the taste of her own saliva. The younger woman was overwhelmed with the situation, a million thoughts and feelings running through her head, but her older lover seemed to take it all in stride and began to guide her up on top of the wide trunk of her car, where she made her spread her legs wide between the comfortable wings. And just when Deborah was wondering how two women would ever make love like this, Barbara had already torn her panties with her sharp fingernails and a decisive jerk, and buried her face inside her moist, warm muff.

The tongue now licked right across her sex, that place that she barely even dared to touch herself, now open and spread wide for her step-sibling to explore freely. She liked to believe that she was completely at the mercy of the older and more experienced woman, but something inside told her that she enjoyed this too damn much to even want to resist it anyway.