At first, Joey merely dabbled at the wet crack of his sister's twat. But he was soon pressing his tongue in among the slippery inner lips. He even sent his tongue exploring up the narrow passage of her canal.
"Oh, Joey," Betty moaned. "You do that as well as Jane. Maybe even better!"
When he heard that, Joey became even more adventuresome. He pushed his tongue high up his sister's flowing pit and wiggled it with all his might. Then he found her clit with the tip of his tongue and fluttered it over the hard bud.
"E-e-e-e-!" Betty wailed.
Joey could tell he was doing a good job. And he found that he was enjoying this meal. He liked having his sister's cunt juice running down his chin, and he loved the idea of having his face pressed right into the wet opening in her crotch. Most of all, he enjoyed sticking his tongue up the forbidden opening of his sister's cunt.
Joey's head began nodding as he licked the entire length of Betty's slot. Then his head would be still as he sent his tongue up her cunt again.
Betty began kicking her legs in the air. Joey could feel her thighs thrashing at the sides of his heed.
"Are you sure you never did this before?" Betty asked in a shaky voice. "You sure are good at it!"
Joey looked up over his sister's hairy bush, over her stomach, and between her tits to her face. Her face was turned up to the ceiling. But Joey recognized her expression of extreme passion.
Betty looked down suddenly. Her eyes and Joey's meet. Joey never saw his sister looking so grateful. He was her hero.
"Now, if you suck my clit I'll come," Betty said. Still looking into his sister's eyes, Joey moved his mouth to her clit. He discovered that he could pull its flesh around her love bud right into his mouth.
And when he did. Betty went wild.
"Oh-h-h-h-h-h, God!" she hollered. "I love it?"
Joey munched her clit hungrily. He could tell that Betty was in the grip of a powerful orgasm because of the way the whole bed was bouncing.
Betty ran her fingers through key's hair. Then she gripped his head and pulled it tighter to her pussy.
Joey knew that his teeth were digging into Betty's cunt as he sucked her clit. She didn't seem to mind, though.
Joey saw Betty's tits thrashing about wildly on her chest as she squirmed and gyrated. He reached up to her chest and captured her flapping jugs. Even as he held them, they jumped and rolled.
"Okay, that's all I can stand!" Betty cried as she pushed Joey's head away from her cunt.
When he lifted his face, Joey was aware of the slippery juice that covered his cheeks and chin and ran down his neck. He looked down at his sister's cunt. It was spread wide and all her pubic hair was soaked and matted.
Then he lifted his eyes and looked at the girl stretched out in front of him. Betty, in her satisfaction, looked beautiful.
Joey lay down beside her. He had told her that she didn't have to repay him for his cunt-lapping.
And he wouldn't go back on his word. But he hoped his sister would do something for him anyhow. Another blow job would be perfect, he thought.
"Oh, Joey," Betty sighed. "Did you like doing that?"
"Yeah, it was fun," he said. "And really exciting!"
"I'm glad you liked it," Betty said. "Because I sure do love having my pussy licked!"
Joey put a hand on one of his sister's tits. Holding her jug might remind her that he was still horny, he hoped.
"Oh, Joey," Betty said. "I wish I could blow you or something. But I told Jane what we had been doing, and she made me promise I wouldn't do anything to you again. Jane seems to think that incest is very bad."
Joey couldn't believe his ears. Not only was he disappointed, but the idea that Jane was standing in his way with his sister made him angry.
"Jane thinks it's all right for your two to suck each other's cunts, but we can't touch each other?" Joey asked.
"I know it doesn't make much sense," Betty said. "And I'm going to talk to her about it. But until she lets me out of my promise, there's nothing I can do."
Joey had to admire his sister's honesty. But that didn't do him any good. He was so excited from eating his sister's pussy he really needed to come. It seemed ironic that after bringing his sister to a smashing climax with his tongue, he was going to have to jerk off again.
"Well, you'd better leave me alone," Joey said.
"What are you going to do?" Betty asked.
"What do you think?" Joey said bitterly.
"I know, you're going to jerk off," Betty said. "But why don't you let me watch? I'd love to see you doing it. Besides, wouldn't it be more fun with me watching?"
Joey knew that it would be more fun. But he wasn't sure he could do it with his sister watching. After thinking about it for a few seconds, and feeling the tremendous lust that seethed in him, he decided he could do it with her watching.
"Okay, but it seems strange," Joey said.
"Yeah, it does seem strange," Betty agreed. "But I can't break my promise to Jane."
Joey grabbed his prick. Betty curled up beside him with her heed resting on his shoulder.
Joey began moving his fist up and down on his prick. He looked at his sister's naked body with longing. If only he could have his cock in her mouth or cunt. But it was exciting having her beside him watching him perform this horny ritual.
Besides, under these unusual circumstances it made sense for him to jerk off with her watching, and these circumstances probably would never arise again.
So Joey made the best of the situation. He knew that jerking off had never been so exciting. And he tried to go slowly to make the pleasure last as long as possible.
"Gee, it's really fun watching you do that," Betty said. "I used to hear you breathing hard and grunting in your room, and I always tried to imagine what it would be like to watch you jerking off."
The news that his sister had heard him jerking off in his room shocked Joey. But as soon as the shock wore off, he was more excited than ever.
"Uhh," he groaned as his jism gathered under the pressure of his passion.
"I know!" Betty said suddenly as she rolled onto her back. "Come in my mouth!"
Joey looked at her in amazement.
"That way I wouldn't be doing anything to you," she explained.
It was a good idea. And it would make this climax really special, Joey decided.
So as quickly as he could, he straddled his sister's chest. Her mouth was open, waiting for his cum.
But Joey was too far along to wait until his prick was aimed at his sister's mouth. The first shot hit her right in the eye.
"Oh-h-h-h-h!" Betty gasped as she wiped her eye.
But she kept her mouth open, and the next spurts of jism went right into it. Watching his sister catch his cum in her mouth made coming really spectacular, even though he was just jerking off.
When the last few drops merely drooled out of Joey's prick, Betty stuck out her tongue to catch them. Then she licked the very last bit of jism from his prick head.
"Oh, I guess I shouldn't have licked that last drop," Betty said. "That was breaking my promise a little. But I lost my head."
"That was great," Joey said. "Jerking off never was that good before."
"Don't worry, Joey," Betty said. "I'm going to have a good talk with Jane. She'll let me out of my promise."
CHAPTER SIX
"Hey Joey," Betty said to her brother. "Jane's coming over, I'm going to try and talk her into letting me out of my promise."
"Good luck," Joey said, pretending not to be too interested.
"I'm going to see if I can get her to let you join us in bed," Betty said. "She could learn a thing or two about eating a cunt from you. Besides, I don't want to be a dyke. I mean, I don't want to be only a dyke. I loved blowing you and jerking you off and drinking your jism. I don't want to give that up."