Step Brothers swap moms to get them pregnant

[Strangebuddy]

Several years back, two wives divorced their husbands and got married. It's a happy marriage and they love their sons from their previous marriages very much.

While it's not a completely open marriage, the two of them do swing ever so often and get a couple of guys and gals to share when they feel frisky. However, as they get older, they realize their child bearing years are running out and they would like to have kids one more time. At first they think artificial insemination is the way to go...but they think it would be more fun to make them the old fashioned way, at the same time. So they start browsing on line.

Step bros meanwhile, in their first week of college, see the post and know from the user name and details that it's their moms. While they wouldn't admit it openly, they both have been crushing not only ontheir stepmoms but their own moms. So they pose as brothers who are interested in a couple of bisexual MILFs and over the course of instant messaging and emails, get their moms hooked on the idea until they set up a rendezvous.

Sons show up and while moms are shocked, they are so invested that they accept, provided it's stepsons fucking them and not their sons. They have a week set aside for the impregnation and sons eagerly agree while planning to see how far they can get their mom's to bend their rules (they need to stay nice and hard for the whole week so is it really too much to ask for a blowjob or handjob from their moms?) and become their ongoing source of cock (after all, once their moms are pregnant with their stepbrother's baby, they don't have to worry about getting their mom's pregnant.)

 

[Carnevil9]

(they need to stay nice and hard for the whole week so is it really too much to ask for a blowjob or handjob from their moms?)

No, it's not too much to ask, but they can't expect to be finished off that way. Since the whole purpose is impregnation, every handjob or blowjob or whatever is going to have to finish in step-mom's "incubator of love." Not that there's anything wrong with that!

 

[Strangebuddy]

Indeed. I figure the sons play sly to get mom's interested. Like taking a break to hang with their moms and pretending to worry that they are having problems performing, so they ask if mom can try giving them a "jumpstart" just to get hard, they don't want their step moms to think they can't keep up the pace.

Of course, they start playing things even before that. In the emails, they got at least one of the mom's to admit she dreams of having her wife and two guys take her in every hole at once. And then, when they had sex for the first time, they were all in the same room, so both moms know how virile their sons are. So once moms are pregnant, they are ready to have sons (or even before, as long as they stick to their mouths and asses)

 

[Hypoxia]

A Taste of Spiced Rum features two cousins swapping their moms (incestuous sisters). And they do their own mothers, of course. The fun is kicked off by the MC's aunty. I prefer to write tales where the boys are tools of women who know what they want, not manipulating their naive elders. Less creepy.

 

[Strangebuddy]

Hmmm, I could see it being creepy the other way though (as their parents they still have power over their sons, whether financial or being a source of emotional support) but the manipulation is understandably creepy so it could be axed or lessened.

Maybe a middle approach: moms want to get pregnant but they don't know who with. While sons are away at college, they clean their rooms and find their old computers have search histories for mom/stepmom incest and even a pair of panties that they thought they had lost.

At first the moms laugh it off but the idea germinates in their head. They decide to test the waters by wearing some more revealing clothes and being more open with their affections (making out, having sex with the door ajar) and seeing their sons reaction. Each time sons come home, they probe a bit further and then on the last day of the thanksgiving break, they have a discussion with both of them and ask if they'll get them pregnant.

Sons agree (maybe moms even give their stepsons a little taste of what to expect) and go back to college, where they barely make it before rushing home for winter break.

They fuck their step moms dutifully but sons admit they want their own moms too and moms, at first only willing to suck or jerk off their boys, come around to the idea. And once they confirm their pregnancies, they let them fuck them as much as they want.

 

[Carnevil9]

They fuck their step moms dutifully but sons admit they want their own moms too and moms, at first only willing to suck or jerk off their boys, come around to the idea. And once they confirm their pregnancies, they let them fuck them as much as they want.

That could be the crux of the entire story: each brother is doing all he can to help the other brother to knock up his mom, so that he (the biological son) can fuck the mom without worrying about getting her pregnant.

 

[Hypoxia]

I'll call my SPICED RUM plot with two sister-mother-son pairs more incestuous than step-brothers, sons of unrelated parents. Both my cousins gets both mom and aunty, who are also lovers. It doesn't really matter who impregnates who because they all share 25-50% of their DNA -- more if the sisters are identical twins and their sons have the same father (maybe their brother). Then the cousin-guys are essential identical, too. Yeah, that goes far beyond SPICED RUM.

Twins Mari and Shari were fucked by their brother Barry when they were 14 and he was 16 (reported, not described, because rules). Mary's son Meth and Shari's son Seth have turned 18; their table-tennis-toned MILFy moms are now early thirties and feeling antsy. Not the approaching biological clock; just wanting more. Cue the sons' attempts to enrich their lives.

Resulting kids will be essentially identical, too. Hope they have good genes.