Erin

Deciding to bring your mother in on the fun, you whisper in Erin's ear.

"In five minutes, go to my room and get the handcuffs and bring them to the guest room."

Your mother nods, so you turn to Rosa.

"Rosa, a good dinner like that with such gorgeous company always makes me horny. Come with me to help me with that."

Dana coos while your mom cheers Rosa on. Honestly, this adoration from others about your lusts is probably the second best part of this whole deal. You're really finding it hot.

Once you and Rosa are alone in the guest room, you quickly bring her up to speed on a couple of things.

"I'm currently training Mom to be an obedient cumslut. I want you to help with that. We're going to dominate her tonight, and the only cum she'll be able to get is what she eats out of you. You in?"

Obviously the question is just rhetorical - you've expressed a sexual desire and your sway is absolute. However, if Rosa is going to help dominate Erin it would help if she weren't just ordered to do it.

"That's pretty hot, John. I'd love to," Rosa says with a sly smile. You hope you've hit on genuine interest here. Having a switch in the harem could be very useful, and fun.

While waiting, you both strip and have her sit on your lap. You mother enters to the sight of your hand buried in Rosa's crotch.

"Good timing, Mom. Put the stuff down then stand at attention. Don't move an inch unless we tell you to. Rosa, don't you think this slut is over-dressed? Would you be so kind as to strip her down to her panties?"

You sit back and watch as Rosa starts to methodically strip your mother. You note with pleasure that she takes any chance to feel Erin up along the way.

"Hands up," Rosa commands, as she pulls up Erin's shirt. It catches around your mother's tits, and Rosa makes sure to stretch it taut so it lifts them up with it.

"Hands back down." Rosa now hugs your mother from behind, her hands snaking underneath Erin's red lacy bra (you had no idea she had lingerie - you'll definitely tell her to start wearing some often) to start kneading the mounds inside them. After a minute of your mother's moans, Rosa withdraws her hands and removes the bra. Next, she reaches down to Erin's hips and unzips her jeans. Letting them fall to the floor, she gasps as she feels how wet your mother is.

"I am pleased you're keeping yourself wet for me, Mom."

So saying, you stand up, taking the blindfold and handcuffs with you. You catch Erin's hand as you pass her and pull it gently behind her back. Rosa follows your lead and brings the other hand to you. Quickly you attach the handcuffs, pinning your mother's hands behind her. You lie back on the bed as Rosa straddles your hips. You reach up and grab her waist, pulling her down to grind against you. As she starts to rock her hips forward and back, you reach up to grab the small of her back with one hand while seeking her clit with the other.

Rosa's juices already have you slick, so you lift her up and position her over your shaft. A twisting motion from your hands wordlessly indicates she should turn around, and she does, to look your mother in the eyes. Both women moan as Rosa begins to lower herself onto your shaft, Rosa from the feeling of you stretching her deliciously tight hole, and Erin from need that she can't do anything about.

"Help her out, Mom."

With your permission, Erin almost dives forward, burying her mouth in the point where you and Rosa are joined. If you thought she was tight before, when your mother attacks her clit with her tongue you almost have to stop her downward progress because Rosa's cunt has become vice-like. Painstakingly slowly, you inch her down until finally you are fully seated inside her. You let out a low groan at the sensation. Meanwhile Erin has not slowed her oral ****; you can feel its effects on Rosa quite clearly. Knowing she won't last long being double-teamed in this way, you feel no need to hold back yourself, so you lift her hips slightly and begin thrusting upwards. She rocks her hips in time with your strokes.

When she starts rhythmically contracting around you, you know she's nearing her peak, so you increase your pace. Soon she throws her head back and screams her pleasure while her vagina clenches around you, milking your cock. You're given little choice but to explode inside her, firing shot after shot of cum into her until some starts leaking around your shaft.

At the sight of your jizz, your mother's eyes go wide, and she immediately abandons Rosa's pleasure center to catch some in her mouth. As soon as she does, she literally flinches as she too reaches a screaming climax. Rosa collapses back onto your chest, while Erin lies twitching in pleasure near your groins. Your head sinks into the pillow, and decide not to bother returning to your bed tonight. Just before you drift off to sleep, a memory returns unbidden:

"You may contact us upon your own volition by entering a state of slumber post-intercourse and releasing a tether to this realm to request audience."

Huh. Why not?