Susan had so much fun with Alan that she wished the experience would never end. Unfortunately, it did, but she came up with an idea to extend the joy a little bit: she phoned Brenda to tell her about it.
Brenda was all ears. She and Susan had developed enough of a rapport over sexual matters that Susan was able to launch into describing her latest adventures with a minimum of pretense or fuss over the "forbidden" nature of her incest. Brenda had been in the living room watching TV with her son Adrian when Susan called. She knew enough about how the call would go to relocate to her bedroom for privacy during the call.
Brenda was having a great time masturbating to Susan's stories. However, she was still shy enough to try to hide from Susan that she was masturbating. As a result, she was forced to refrain from cumming for fear of making too much tell-tale noise. That frustrating restriction ended up making her even more aroused.
There were a couple of details Susan mentioned that particularly intrigued Brenda. One was Susan's description of Alan's new "tradition" of "getting her attention" by fondling her ass cheeks. The second was the revelation that Susan sometimes fingered Alan's ass, and Alan sometimes fingered Susan's ass. Brenda already knew that Alan was a "tit man," but putting these details together, she figured that Alan was somewhat of an "ass man" too. Brenda was thrilled by the thought that Alan might lavish the same sort of attention on her own rear end as well.
Susan was constantly referring to large breasts, so frequently that she could hardly describe one of Alan's lovers without using "big-titted" or some similar adjective. Brenda was not only weary of hearing that, but also wary of all the attention her own extremely large breasts constantly drew, whether it was lustful, demeaning looks from horny men or jealousy and open envy from other women. She sincerely believed that her ass and the rest of her body was something to be proud of as well, especially since her breast size was almost entirely due to genetics, whereas she had to put in effort to keep the rest of her body looking equally good.
So Susan's latest stories left Brenda hopeful that Alan would appreciate her ass more than her previous lovers and admirers. Strangely enough, that caused Alan to rise still higher in Brenda's estimation without him having done or said anything to her directly.
Once the phone call ended, Brenda was finally free to have her much-anticipated orgasm. As she fingered herself to completion, she imagined standing naked in front of Susan, Suzanne, and Katherine, with Alan wantonly kneading her ass cheeks and even probing into her ass crack. The thought of him taking such obvious liberties with her bare butt, in front of witnesses, ignited a desire for him so fierce and overpowering that she had a surprisingly powerful climax. It was only afterwards that she realized she'd been thrashing around on her own bed as her orgasm went on and on, leaving her a sweaty, bedraggled mess.
It all made her wonder if the reality would be just as overwhelming as her fantasy. She couldn't wait to find out.
— — —
The rest of the evening flew by. Alan had a mostly wordless but very memorable and orgasmic shower with his mother. She was so horny that she let him have even more liberties than before. He put soap on his revived erection and "washed" her ass with it. She even let him dry hump her for a few seconds under the excuse of having him wash the space between her legs with his rampant boner.
As he showered, he thought to himself, Today, I've realized that Mom is a total nymphomaniac. She truly can't get enough! I seriously think her sexual nature is just starting to be revealed, and even this isn't all there is. That's almost scary! Okay, it IS scary! And she's so fucking HOT!
But then it occurs to me that Aunt Suzy is equally hot and horny. She's probably even sultrier, if such a thing is possible. Then there's my "fuck toy" sister, who's super horny all the time too. And Aims. And Heather, mega-bitch though she is. And Akami. Kim. This Elle woman. And... My God! Too much! Mom feels so good; I'm gonna blow for sure!
Susan had already made it clear that she wanted to take his load in her mouth. But Alan had an accident. He'd been sliding his cock up and down her ass crack. It wasn't in her asshole, but instead he'd pushed her ass cheeks together and was fucking her ass crack almost like it was cleavage in a titfuck. Without any warning, he lost his PC muscle control and started shooting his ropes of cum. There was no time to change position; the ropes flew forward and repeatedly hit Susan's back.
He tried to make the best of the situation and turned off the water. Some cum had landed in the long hair that cascaded down her back, and he couldn't do much about that. But the gobs that had landed on her skin he vigorously rubbed in, until her whole back was saturated in cum and she generally smelled like a whorehouse.
Thus did he turn his mistake into a very pleasant ass and back rub.
She didn't mind the lack of her usual taste treat too much, because she imagined that he was taming and marking a new part of her body. She liked that idea a lot.
This latest ejaculation brought him to eight orgasms for the day. He had to stop massaging her after about ten minutes, because he sensed his dick was about to get hard again and he knew that if he did she wouldn't let him leave until she finally had her mouth properly filled. He would have enjoyed that, but he knew that he was on the verge of overtaxing his equipment.
In fact, he realized that he probably already had overdone it somewhere about his sixth time. He was pushing his luck, and seriously imagined someday having to go to the emergency room to have them save an overworked dick.
By this point Susan was sitting on the floor of the shower. She'd had so many orgasms that she could no longer stand even if she'd wanted to.
He reached out to turn the water back on so he could clear his cum off her back and refresh her, giving her the energy to get up.
But as his hand went to the shower knob, she said, "No, Tiger. No thanks. I'm fine just like this. I want to go to bed smelling of my son's powerful seed."
He kept the water off.
She thought to herself as she continued to recover, One of these days I'll have to get Tiger to do me like that all over. First, a hefty deposit in the mouth. That goes without saying. I could rub some of that all over my face too. Then one load to cover my back and have him rub it deep into the pores of my skin like he just did. Then another to cover my legs in the same way. Then one for my stomach and arms. Finally, he could rub his dick all over my tits just like he did my ass crack, and really take the time to rub the cum in all over my chest. Let's see... How many loads is that? Five. He could handle that, no problem. He's done ten in one day!
Later in the day, he could freshen me up with another load on my face and into my mouth. Wouldn't it be great if my face was just caked with cum? Suzanne and Angel would be so jealous. I'd walk around naked all day and they'd get so horny just smelling my cum-drenched skin. Maybe they wouldn't be able to handle it; they'd start licking me all over. Even licking me in very private places...
Her thoughts were drifting into forbidden areas, as she wouldn't admit to herself that she had any lesbian tendencies. So she wrested her mind from that fantasy and looked back at her son.
He asked her, "What are you thinking about so fervently, Mom?"
"Oh, nothing. I was just thinking what a wonderful, loving son you are. Let's get up; I can't just sit here forever."
"By the way, Mom, back when we were really into it at some point, you said your pleasure didn't matter. That's so untrue!"
"Nonsense. You're the one with the special medical need. I'm-"
"Hey! Listen to me! I insist. I'm not backing down on this point. If you're not getting pleasure out of it, then it's not as much fun for me. So, even if your only goal is to make me cum, you have to cum lots too!"
She chuckled. "Hmmm. That doesn't sound right. But I'll think that over and get back to you."
He helped pull her up until she could stand, though just barely. She didn't even dry herself off with a towel, so that she wouldn't towel off any more of his rubbed-in cum.
Once she'd more or less recovered, they retired to the living room. She realized that she'd never finished "cleaning" his penis and balls after his climax, so she proceeded to do that for a good long while. Her hope was that he would get hard again. But just when his penis started to show signs of life, he told her sadly that he shouldn't have any more climaxes until the next day.
The two of them just cuddled together on the living room sofa, reading. Alan read a history of the Roman Empire that he'd started a while back, while Susan perused a fashion magazine. She'd never really been interested in fashion before, despite Suzanne's many efforts to educate her, but she was fascinated now.
Her blouse was open and his shorts were unzipped. He liked to rest his head against his mother's spongy bare boobs while he read.
Susan read with one hand in his shorts, keeping his cock semi-hard by lightly fondling it. But it was more that she liked the reassuring, familiar feel of it in her hand than that she wanted to stimulate him, given that she knew his dick was done for the day. When she wasn't doing that, she caressed his chest underneath his shirt. But these caresses were low intensity, so they managed to keep reading their books.
