You meet Sam in the hallway
From Torg Adventure
As you take a step or two away from Amy's door, you see Sam come out of your mother's room. She takes a look at your naked body and averts her eyes, and looks like she's about to double-back into your mom's room. You cover your junk with the clothes you are holding, which is apparently enough for her not to go hiding again. That had always been her tendency in the past whenever chance had caused her to see you naked. She'd cover her eyes, or run into her room.
"I don't suppose you've seen Mom, have you, Max?" She asks you, looking you straight in the eyes, so as not to have to look down lower. "I've been looking for her, but she's not in her room, nor any of her regular places."
You can't help but smile a little. "Yeah, I know exactly where she is." You gesture with your head back at Amy's room. "Come on."
Sam gives you a wide berth as she slips past you in the hallway. She goes to Amy's door, pushes it open, and goes in. You're right behind her, pushing closed the door behind you and following her the extra step or two she automatically took into Amy's room when she first entered.
Your mom is still in the chair, naked. Her eyes are closed, and her fingers are busy, still playing with her pussy and clit. She is so enrapt in pleasuring herself that she doesn't even notice the two of you in the room.
"Oh my god," Sam whispers hoarsely. She spins around, to find you right behind her. Her eyes are wide in shock at what she's seen. She pushes you to the side and goes back to the door to Amy's room, opening it. She gasps, then pushes the door shut again.
"It's Amy!" She whispers at you frantically. "She's coming back from the shower."
"You can't let her see you and mom together like this," you tell her. "She'd think you were part of it." Actually, Amy would likely know that Sam didn't have any part of it, but Sam didn't know that. And the shock of seeing her pregnant mother pleasuring herself naked was still fresh in her mind.
"What are we going to do?" She asks you desperately.
You glance over at Amy's closet. It's a match to yours, with two sliding glass doors, except hers is decorated with photos, stickers, and other miscellaneous crap. "We can hide you in there," you urge her. You grab her shoulder and guide her, unresisting, to the closet, which is already open. Inside is a mixture of clothes, cosplay outfits, and some computer racking, but there's still plenty of room for your oldest sister. She goes in readily enough, and you slide the door most of the way shut.
You turn around just in time to see Amy come into the room, wearing just a towel in her hair, and other wrapped around her body. She sees you first, and you think you see a flicker of happiness, or something else as she does so. Then her eyes go to your mom.
"Mom!" Amy says, obviously aghast.
Your mom's eyes fly open, and she stares at Amy, shame appearing on her face. Then her eyes catch you, and like Amy, she smiles, although for much longer. It's only after a few seconds that she thinks to stop playing with herself.
Amy looks at your mom, and apparently notices the cum oozing out of her pussy, as well as the way your mom is looking at you. "Holy cow... you did her, didn't you Max. You screwed our mother." You hear a gasp behind you in the closet, but only you are close enough to hear it.
Your mom looks more than a little guilty. "I had it coming, Amy, after all the things I'd done today. And it is Max's right to do so, now."
"Max!" Amy says, growing angrier. She walks over to you and slaps you. "You don't just screw our mom, Max!"
"Amy!" Your mother's voice takes on something close to her former tone of authority. "You don't slap your brother. At least not for this. I wanted him to take me. I didn't want to admit it, but I'd gotten so horny watching the two of you today that... well, I was very receptive when the time came." She looks at Amy. "You of all people should understand what it's like to have emotions and lusts inside of you that you can't always control."
Your sister still looks uncomfortable with the situation, but does lower her head a little, and her voice. "Sorry, Max."
Your mom looks at Amy for a moment. A wan smile comes over her face. "I don't think apologies are going to cover it, anymore, Amy. Not with Max."
Amy looks at you suddenly. "Oh geez, not again." She looks down at her body. "And I just showered."
"Get on the bed for some spankings, Amy," you tell her. She keeps her head down, but you can still see her eyes light up when you mention spankings. Still wearing her towels, she gets onto the bed on all fours, perhaps a little more eagerly than might be expected.
You let your own clothes that you were holding drop to the floor, then kneel on the bed by Amy. You make sure that your mom has a good view from where she is sitting, and also that Sam has a good view from the closet. You know that she won't leave the closet and expose herself to such a sexually-charged environment, prude that she is. She'll hide in that closet all night if she had to, hoping that you don't rat her out. You also suspect that she won't be able to stop watching, either.
You lift the towel up over Amy's ass. It's almost returned to a normal color after your spanking earlier, which is a shame, because it turns such an attractive shade of red, contrasting with Amy's normally paler skin. You decide to remedy that, and bring your hand down on her bottom squarely. Both Amy and your mom make little noises as you do so. You spank her again, harder, rocking Amy's body hard enough that the towel she was wearing on her head falls off, aided by her dipping her head down. Her still damp hair is now exposed, although the towel wrapped around her body stays on.
Your hand keeps going, and as it does, your mom's hand starts going on her own pussy, as she no longer needs to hide what she was doing during the earlier spankings. Amy gets a very good view of your mom frigging herself.
Your earlier experience with Amy tells you that spanking her to orgasm would be counterproductive, and that you should just use it as foreplay. So when you can tell she's good and worked up, you pull the towel off of her completely, then get behind her on the bed.
"Yes..." Your mom moans, two fingers in her pussy, and rubbing her clit with the other hand. "Fuck your sister like a dog."
"This still feels kind of rape-y to me," Amy says softly from the bed, but doesn't move as you guide your cock to her pussy from behind. Or at least she doesn't move away. If anything, her body adjusts itself slightly to accommodate the position. Of course, Amy is soaking wet by now, so you just thrust your cock all of the way inside of her. The action elicits a groan from Amy, a moan from your mom, and a muffled gasp from the closet.
"That's it, Max," your mom moans again as she watches and masturbates. "Punish your sister good... then maybe punish me after for getting off on it."
Amy stares at her mother in disbelief, even as you begin thrusting into her doggy-style. "Max, what did you do our mom?"
"Fucked me from behind, like he's going to you, dear," your mom moans absentmindedly. "Except I was standing up."
"You turned her into a slut, is what I mean," Amy says, before ironically moaning loudly. "She was never like this before."
"I was completely like this before, Amy," your mom tells her. "I just never let you kids see it. There's a reason I had you kids when I was so young. Then I spent the remaining years trying to hide it. Now I can't hide it anymore."
"Oh, great," Amy moans. "I probably inherited the slut gene from my mom..."
"You are getting fucked by your brother for the what? Third time?" Your mom says. "While you let your mother watch."
"Great, I was doomed from the day I was conceived... stupid fucking genetics," Amy moans. Then she looks back at you. "Oh fuck, genetics... I don't suppose I could convince you to not shoot it inside me this time, Max? Even if it's probably already too late."
"Let him put it where he wants to, Amy," your mom says. She brings a finger to her mouth, covered with some of your cum from earlier.
"Ohhhh..." Amy groans. "That's easy for you to say... you're already pregnant."
"Yes," your mom says, looking at her belly. "But I won't be soon. And then I still have a good number of fertile years ahead."
That takes Amy aback a little. "Great... I'm getting another brother or sister after this baby is born. And a cousin at the same time." She shakes her head, in exaggerated disbelief. "This is just like some of my manga."
"I'd... I'd like to read some of those then, I think," your mom says, still watching her children fuck as she frigs her pussy.
Amy laughs. "You don't need to... we're living it, now." Then she moans and grinds herself back into you. True to form, although she'd start out relatively passively, passion took over the more you fucked her. You took it as a sign to fuck her harder.
"Let me know when you're going to cum," your mom pleads. "I want all of us to cum together..."
"You... you keep making this more and more messed up mom," Amy complains. "But if that's the way you want it... very soon..."
You'd agree with Amy's assessment. You see your mom start redoubling her efforts on her pussy, still watching hungrily as you fuck Amy. You imagine that's Sam's eyes are watching just as intently, even if she is a prude. It would be just about impossible for anyone not to do so in such a situation. Nor is it unlikely that she's getting a little turned on by all of this. Which doesn't mean that she's just going to literally come out of the closet and beg to be fucked when this is all over. However, you do have a trump card; the bet. She is obligated to sleep with you. And a very good time to play that trump card might be coming up in the next minute or so.
"Get ready mom!" Amy says, her voice uneven. She is panting heavily.
"I'm almost there, baby..." your mom responds. "I can go anytime now..."
"I'm definitely cumming inside you, Amy," you tell her. "I'm getting you pregnant, than like mom says, once she's popped out her kid, and is ready to go, I'm knocking her up, too."
"I don't want a baby..." Amy moans, extremely close to orgasm. "I shouldn't have a baby... not like this..."
"Genetics, Amy," your mom reminds her. "Look at your aunt and me. We love sex, and we love being pregnant."
"Oh, great," Amy says, but not terribly miserably. "How can I fight that? I'm programed to be a pregnant slut..."
"Don't fight it, Amy," your mom urges her. "Just accept it."
Passion gets the better of the normally logical Amy. "Fine, then." She turns a little to look at you. "Go ahead then, Max. Cum inside me, and make a baby. It's apparently what all three of us want." Her words and tone were meant to be somewhat ironic, but as soon as she finishes saying them, you feel her body quake. Your mother somehow sees it before you do, and lets her own orgasm trigger. It's not like you could hold it any longer at this point, even if you wanted to, so you cram your dick as deep into Amy's pussy as it will go, and blast your hot jizz right into her uterus, your vision going grey with the force of the energy leaving your body.
"Oh, really, really, going to hell for all of this," your mother moans, her body aching in the chair.
"Oh god, Mom..." Amy moans. "I can feel his cum so deep inside of me... so hot..." she bucks her body back wildly against yours.
"I need to feel it when I don't have a baby in me," your mom muses, her body still twitching as she watches her two children climax in front of her.
"Please Max," Amy begs you. "I know you always have a little more, right at the end..." She moans then as you give her the remainder of what you have left for now. She seems to be enjoying receiving your seed much more than before, perhaps due to the conversation her mother and her were having, or maybe just because of passion.
Once everyone's orgasms have died down, you pull out of Amy. She crawls forward a little and turns over to lie on her back on the bed. Your mom seems content to stop frigging herself for now, a content smile on her face.
That leaves Sam in the closet. She's likely shocked at what she's just seen, and probably paralyzed with fear of being found out. You could give her away right now, although you suspect that Sam wouldn't just happily run out and impale her virgin pussy on your cock, no matter how horny the show may have gotten her. But like you were thinking earlier, you did have her promise from the bet up your sleeve. Or maybe some verbal encouragement from your mom and sister could help as well, although you're not sure how they might react to finding out Sam was watching them. On the other hand, if you cleared everyone out of Amy's room, so that Sam could make a discrete exit, that could have it's own rewards. Sam might react more favorably to you saving her from the awkward situation that would ensue if her presence were revealed. That could potentially work out better for you, as it's possible Sam would freak out if you did expose her presence right now. A sexual prude like her might not be inclined to do anything with her mother and sister around, bet or no. A third option was the one your mom had mentioned earlier: to punish her for getting off on watching you fuck Amy again. You're not sure just how interested Amy and Sam were in seeing that happen, though. It might be a turn on to them, or a turn off.
Expose Sam, or wait and help her get out of the room unnoticed? Or screw your mom again?
