"You really want to make me feel good?"
"Oh yes, I'd do anything for you, anything at all," Donna insisted. "It's just that I don't really know what to do."
"Well, you could blow me," Gerald decided, trying to sound calm and reasonable. "I'll tell you exactly how to do it."
"I don't know if I could do that… take it into my mouth, I mean," Donna answered timidly. "Joanie told me about that once. It sounded so awful and dirty."
It took but a moment for Gerald to change his sister's mind. The thought of her thick, sensual lips surrounding his cock was sufficient to give the boy new powers of eloquence. He assured Donna that she would be doing nothing unnatural, that sucking cock was something every girl had to learn sooner or later.
Then Gerald sat up on the bed, bolstering his strong back against the oak headboard. His prick stood up straight from his groin, lined with thick, angry looking veins, bobbing gently but insistently as he watched his sister's changing reactions.
"Come on, all you have to do is take it into your mouth and kiss it and suck it a little. Just like a big candy cane."
Donna giggled, glad that her brother was making things easy for her. She was slightly nauseated by the thought of sucking the huge prick but she would do it anyway. The big organ was not to be denied. Besides, her brother had fired Donna's curiosity and there was only one way to satisfy it.
Donna squatted between her brother's parted thighs, slowly lowering her head toward the inviting target of his turgid rod. She placed a tender kiss on the purple crown, feeling her firm young tits pressing against the inside of his thighs. He had been right, Donna decided, there was nothing wrong or disgusting about using her mouth to satisfy her brother's lust.
Finally, Donna parted her bright white teeth, allowing the first three inches of her brother's meat to penetrate her moistly inviting little mouth. The thing seemed too large to handle at first, stretching Donna's lips and threatening to dislocate the girl's lovely chiseled jaw.
Donna was able to get used to the unfamiliar penetration. She found that her mouth was producing a great deal of saliva, the heavy flow making it much easier to handle the still motionless pecker. Little by little, she attempted to service the full seven inches of the fearsome cudgel.
Gerald folded his hands behind his head and tried to relax. He had what he wanted now, had talked his sister into sucking his tumid cock. Donna had no idea that she would soon be swallowing a veritable ocean of cum, but there was no need to tell her about it until the moment of truth had finally arrived.
In the meantime, she was doing a damned good job of turning him on, considering that she was a completely inexperienced little virgin. Her tongue was wrapped around his prick now, each stroke driving the handsome lad half crazy with desire. Yes, it wasn't going to take long for him to fire his wad.
Then Gerald allowed himself to move, rocking back and forth on his pelvis and shoving his prick deeper into Donna's unresisting mouth. In seconds he had reached the back of Donna's throat and was able to feel the girl gagging and struggling from the effort of handling his huge throbbing meat.
"That's right, baby," Gerald encouraged. "Just keep sucking and licking it. You're doing it just perfect."
By that point, Donna had overcome all feelings of guilt and shame. It wasn't as good as having her cunt and clitty licked but she definitely felt stimulated by the control she was exerting over Gerald's lust. It felt good to think of herself as a real woman, doing new and dangerous things with a man.
"Let it go out of your mouth and lick it a little," Gerald commanded his sister, more sure than ever that he could talk her into anything. "Just run your tongue up and down it, all the way. Especially the tip, that's where it feels best."
Donna gripped the thick member by its base, immediately protruding a pink wet tongue from her luscious lips. She ran her tongue along the shaft from base to crown, letting it linger around the collar before attacking the head. She could feel Gerald's whole body trembling. It was hard to tell if she was hurting her brother or giving him pleasure.
Her tongue was moving like a snake, coating every inch of the thick rod with a fine patina of sweet warm saliva. She could feel the blood throbbing through Gerald's prick, could feel his passion rising higher and higher. Still the boy seemed in control of his lust, at least for the moment.
"Do it to my balls," Gerald gasped, no longer trying to control his voice. "Lick them, just like my cock."
Donna obeyed her brother without hesitation, not realizing that the experience was as new to him as to herself. She held the soft globes in her right hand and then licked them gently, her tongue getting tickled by the wiry black pubic hairs. Sex was turning out to be a lot less complicated than she had expected. To her surprise she was actually enjoying it.
She began to act of her own volition, shocking Gerald by opening her mouth wide and taking both balls into that inviting cavity. Donna licked and sucked and dandled the heavy, soft spheres for a few moments, feeling her brother's prick brushing against her smooth pink cheeks and coating half her lovely face with a bath of her own warm saliva.
But Donna tired of that game, knowing that her real work consisted in servicing Gerald's still throbbing prick. Reluctantly, she relinquished his balls, holding her hand around the crown of Gerald's prick. Two seconds later the big organ was back in her mouth, harder and thicker than ever.
"Go ahead," Gerald insisted. "Suck it good, make your head move up and down on it. I know you can do it, Donna."
Now it was a matter of pride with the young girl. Donna had always felt young and callow compared to her brother, just an inexperienced, clumsy little girl. She was now proving that she had talents of her own, that it was child's play for her to work over the heavy cock filling her mouth so fascinatingly.
Gerald reached down and fondled his sister's tits as she continued to suck him off. Her knockers were absolutely fantastic, full and firm, pink and white, totally captivating. Occasionally when she would move the right way he could feel her cunt brushing against his legs. That turned Gerald on all the more, until it was a real problem to keep his passion leashed.
Donna surrounded his thick, aching-to-cum cock with her clinging pink lips, pulling hard. She could feel her cheeks getting hollow from the effort but her jaw was no longer tired or sore. It would have been nice to continue sucking his cock for hours, unlikely as that prospect seemed.
Then Donna began to experiment in earnest, trying to understand her brother's sensuality. Everything she did seemed to increase Gerald's passion, but some things were obviously better for him than others. At that point Donna brushed her long blonde hair out of her eyes, sensing somehow that Gerald would dig watching his cock slide in and out of her parted lips.
"Take more of it into your mouth," Gerald commanded. "Not the whole thing if you can't, but as much as you can handle."
Donna inclined her head further, wanting to please her brother at any cost. The first four inches of his prick slid into her hungry mouth easily enough. Soon the thick head was pressed against the back of her throat and Donna could not see how she could service another inch of the huge monstrosity. But the brave girl persevered, knowing that a lot was expected of her.
Her gag reflex turned out easy enough to control. Donna closed her bright blue eyes and then slammed her head down onto her brother's turgid rod, feeling it penetrate into the base of her throat. It was hard to believe, but she had done it, actually succeeded in taking in the full seven thick inches. Her lips were pressed against the boy's wiry pubic hair while her teeth rested firmly and gently against the thick base of his prick.
It felt good to have Gerald manipulating her tits as she kept his cock ensconced in the bottom of her straining throat. Donna could feel herself getting turned on all over again, though it seemed unlikely that she would have another orgasm this time. First she had to bring Gerald's desire to some sort of consummation.