As Susan was talking, she became aware of what sounded like slurping sounds coming from the nearby den. The sounds bothered and flustered her, because she knew exactly what was going on. At first she tried to ignore them, but the moans, grunts, and slurps grew louder and louder. She tried to push the sounds from her mind and focus all her attention on what Suzanne was saying.
Suzanne conceded, "It's not such a bad idea if you give permission first before Angel helps him out. After all, you're the natural one to coordinate his orgasms and make sure that his fat tool shoots out its thick ropes of sticky cum at least six times a day." She continued to make a point of dropping in keywords and phrases that she knew would trigger Susan's lust, even as she was trying to make a serious point.
She continued, hyping Alan at every opportunity, "A well-hung boy like him probably could use a coordinator to keep track of all the busty babes sucking him off, to make sure everyone gets a turn slurping and sliding their hands and lips up and down and all around his big hard man meat. Not to mention pleasuring his balls. But don't you think that grounding her for a whole week is too harsh?"
The words were having an effect. Susan was finding it harder and harder not to slip off to a happy cocksucking fantasyland. Nonetheless, she was about to launch into a defense of her actions when she heard Alan shout out, "Oh fuck, yeah! Like that, Sis! Suck it just like that! I'm in heaven!"
Susan's mouth froze and her eyes glazed over. She spaced out, thinking intently about what was happening in the next room and how it could be her in there instead of her daughter. First I happened to see what happened upstairs, and now this! I thought we had a big house, but I can hardly turn around without seeing or hearing Alan's cock getting pleasured. It's not fair!
After a prolonged pause, she snapped to and said, "Uh, where was I?"
Suzanne tried to stifle a chuckle. "Pretty thin walls, huh?" Although the den and kitchen shared a wall anyway, Katherine had intentionally left the door ajar that led from the den to the kitchen, so there really were no walls to muffle their joy.
Susan blushed. She had to clutch at her breasts to keep them from bouncing around too much, in time to her heavy breathing. "Yeah. Next time I'm going to have to insist they go to his room. ... What was I saying? Oh yeah. The reason that I-"
"FUCK!" Alan yelled, interrupting her again. "Sis! Holy fuck! Where the hell did you learn how to do that with your lips? Dang! ... Do that some more!"
The slurping sounds grew louder. Susan felt as if the cock-licking was happening mere inches from her face, but she was beyond frustrated that in fact there was no cock there for her to lick.
Susan reflexively brought her hands down to her crotch and just clutched them there. She crossed her legs too and squeezed, making her look very much like someone who had an urgent need to pee. That left her braless tits bouncing, but she had only two hands. Her eyes glazed over again as she got lost in the sounds of continued sucking, but she slowly returned to Suzanne and said in a spacey voice, "Huh? We were talking about... Oh yes - punishment for Katherine."
Alan could be heard very clearly saying, "Sis! Please! You never did THAT before. Stop for a sec, or I'm going to lose it!"
Katherine replied even louder, "Oh, Brother! God, I love you! BIG Brother! So big! So hard! So yummy! I LOVE this! Let me suck it! Please? Please let me suck it some more?! Give it to me! Mmmm."
"You think YOU love it? This is awesome! You are SUCH a good cocksucker! And I love how you're playing with my balls too."
In the kitchen, Suzanne nudged Susan and said quietly, "Did you hear that? Remember what I always tell you?"
Suzanne had been "always telling" Susan a lot of things lately, but Susan understood that she was referring to the importance of fondling Alan's balls. She nodded, since she didn't want to miss any of the conversation in the adjacent room.
Katherine cooed, "How about this spot here? ... Mmmm. Yum."
Alan exclaimed, "YES! Right there! That's the spot! Fuck! ... Oh Jesus! Sweet Jesus! I'm gonna lose it if you keep doing that!"
Susan grew both huffy and uncertain as she listened intently to every word and sound coming from the other room. Finally, she forgot all about her previous conversation and asked quietly, "Suzanne, what exactly do you think she's doing in there? What spot are they talking about?"
Suzanne said, "You know the one. It's gotta be his sweet spot, the frenulum. Don't tell me you don't know that. How many times a day do I tell you to focus your attentions there?"
"Of course," Susan enthused. "That's the BEST! Whenever I lick there, his moaning is so happy, and really loud! It makes me cream, just listening to him. I just know that waves of pleasure are shooting out from there, flying up and down his big cock, and making him tingle everywhere!"
"You mean moans like how he's making now?"
Susan listened closely, but she was upset because he was even louder than usual. She didn't realize that he and Katherine were deliberately playing things up for her ears. "Yes, but... He's never that vocal with me... Am I doing something wrong? Do you think she knows some techniques I don't? I thought I was doing pretty well. You have to teach me more!"
"Why don't you ask her when she's done, Susan? Then you two can trade techniques and both become better. Don't you want to be a loyal, obedient cocksucker worthy of your son's fabulous tool?"
"Well, yes, of course!" Her breathing was growing even heavier, and she finding it difficult to fight the urge to play with her sensitive nipples. But even if she'd tried to play with them, she would have been going after a moving target, because her tits were in such continual motion.
"Just think how much more cum he'll shoot every load after you and Angel become a sexy team, working to share knowledge to get better at it all the time."
Susan blushed, but nodded. What have things come to? Two weeks ago I couldn't have imagined sitting around with my own daughter, discussing how to suck Tiger's cock. Even if it is for his medical treatment. But there's no way I'm going to be the second best cocksucker around here! I can't allow Angel to keep her superior techniques secret. Oh boy, listen to him moan! He never sounds like that with me. If only I could stick my head in there... If we share, at least no one will have an unfair advantage.
Suzanne saw Susan's heaving chest. Her nipples were poking straight out, and she had a generally sexually delirious look on her face. Now was the time to ask her again about Katherine's punishment, in hopes of getting some leniency. She prodded, "But what about the grounding? Please explain why you have to ground her. I just don't think it's fair. How can the three of us all work as a big-titted cocksucking team if you treat her like that?"
Susan barked impatiently, "Screw the grounding! She doesn't need... Look. Fine. No grounding. But I can't believe what my children are doing to each other. Let's get out of here! Let's go outside. I need some air!"
Susan truly hated to punish her children; she'd always kept them in line through a heartfelt combination of love, guilt, and expressed disappointment. Punishments weren't really her style.
Mission accomplished, Suzanne walked outside with Susan.
When Susan got really horny, she easily forgot how loud she could get. As a result, she hadn't realized that Katherine and Alan could hear a lot of what she and Suzanne were saying to each other. Katherine pumped a fist in the air triumphantly when she heard her grounding punishment being canceled. She pulled her lips off his shaft and whispered, "Aunt Suzy rocks, do you know that?"
"I do!" He laughed, because even saying that she rocked was an understatement.
Then his sister engulfed his boner to below his sweet spot. Her cheeks became concave as she turned on the suction.
He clutched desperately at her hair as he tried his best not to cum. But things were simply too exciting and he knew it was a losing battle.
A few minutes later, after the blowjob was over, Katherine came out to the back patio where Suzanne and Susan were sitting in the cool night air. (Alan was still in the den, recovering from yet another fantastic climax.) Katherine had to stifle the urge to laugh out loud, because Susan and Suzanne were both sucking on Popsicles. Susan was attacking hers as if it contained the essence of life itself.
Susan was so into her licking that she didn't even realize that Katherine was there. She lapped at it just as if she were concentrating on the frenulum below the head of a cock. She was still high on lust from listening to her children going at it in the den, and the Popsicle was her only outlet since Suzanne was still with her.
Suzanne happened to be facing the door as Katherine arrived, so winked at her young friend.
Katherine winked back. Susan didn't catch either wink, since she was facing Suzanne but concentrating on the Popsicle.
Suzanne decided to act as if Katherine wasn't there, even though it was no big deal that she was. She just wanted to have some fun with Susan. "You know, Susan, I'll bet Sweetie is about ready to give up his creamy load right around now. He's got incredible stamina, so who knows, but I'll bet he's ready to blow. In fact, he could be spewing his load all over Angel's face even as we speak!"
Susan was licking her Popsicle so intently that all she could manage to say was, "Suzanne. ... Improper."
Suzanne pretended not to hear, or care. "Yep. Our sweet Angel is growing up fast. I'm sure she's going to be a very talented cocksucker before long. I'm curious though: I wonder if he came on her face, or her chest, or in her mouth?"
Katherine stuck out her tongue, proudly showing off a gob of Alan's sticky seed resting right on the tip. She hoped that Suzanne would understand that attempt to answer the question non-verbally.
Suzanne just smiled knowingly. She said to Susan, "Your daughter is showing a lot of spunk."
Katherine found that hilarious. She wanted to not laugh, but she couldn't help herself. The best she could manage was that she covered her mouth with a hand and rushed back into the house. Luckily, the screen door was still open. She made it all the way to the kitchen before she broke into a giggle fit.
Susan turned around at that point, since she could hear the giggling due to the open door. She saw Katherine standing alone in the kitchen, so she figured that she'd just thought of something funny.
In fact, the naïve mother had completely missed Suzanne's innuendo, especially as Suzanne covered up for it by further explaining how Susan should be proud of her daughter's take-charge attitude when it came to sucking off her brother.
Suzanne was pleased. Even though they hadn't worked it out in advance, she had worked with Katherine to set up the situation, maneuvering Susan into the kitchen to overhear the purposely loud blowjob in the room next door. Suzanne hoped this would only be the start of closer cooperation to help Susan lose her remaining sexual restraints that much faster.
That incident went further to breaking down Susan's reluctance to have Katherine fully involved. Afterwards, when Susan thought of Katherine blowing Alan, she still tended to get upset, but she also got more aroused than upset.
Suzanne really did know exactly how to push Susan's buttons.