Olivia wanted to be used, and you aim to please.

The changes to Stacey were all very subtle, for the most part. All except for one. You had written them on her back and then made kissing her hand the trigger. When you did so, the power of the marker kicked in and Stacey changed. But most of these changes were invisible, all but for one. Stacey's panties suddenly began to bulge and stretch, before being pushed aside by a new appendage bursting out over the white silk of her underwear. All at once, Stacey had a cock of her own, not as long as mine, a mere 8 inches, compared to your foot long, saliva coated rod, but it was still an impressive implement. Olivia stared at Stacey's new instrument. Stacey climbed off the bed and gestured for Olivia to stand.

Olivia did and Stacey grabbed her, pulling her in for a kiss. She embraced her friend, Olivia's pillowy breasts squishing up against Stacey's more modest B-cups. Her cock rubbed against Olivia's squishy belly as Stacey's hands roamed over her friend's flesh. Stacey winked at you as she kissed Olivia, then smacked her ass, making it quiver. This brought your cock to diamond hardness, watching these two beautiful women press against each other. Stacey pulled away and Olivia gasped. "Are you into girls, Stacey? Are you into me?" She flushed red. Stacey laughed. "Sorry, it's this thing," she said, pointing to her new cock. It makes me so much hornier. I haven't given myself balls yet, as I'm worried it might make into a sex fiend." Then she gestured to you. "Plus, that was mostly for Finn's benefit. He needed a moment to breath."

With that, Stacey lead Olivia over to the bed and had her lay down on it vertically, so her head was hanging off the edge and her legs were pointed towards the wall. Stacey then, still standing, walks over to by Olivia's head and begins to pull down her panties. "Now, let's keep going. I want you to try out my old ones, first." She slipped off the strip of white cloth and pushed Olivia's mouth under her cock up against her pussy. Olivia began to lick and Stacey twitched, holding her friend's head. "Oh fuck," she breathed. Her cock twitched, flopping down across Olivia's jaw and onto her neck.

Meanwhile, you climb between Olivia's legs and investigate. As you guessed, her pussy is drooling, drenching her inner thighs. You stick a finger in and Olivia jolts. "Did I say 'Stop'?" Stacey commands, her cock now a length of iron. "Keep going." Then she glares at you, as if to say, 'Don't tease her.' In response, you point at Olivia's mouth and make a thrusting gesture. 'I thought you wanted to', you mouth. Stacey cock throbs in response. Stacey bits her lip, **** back a moan. "Okay, that's enough," she says, pulling back. "Now, let's try this new guy out."

She lowers her erect cock toward Olivia's plump lips, the tip throbbing and dripping pre. In response, Olivia opens her mouth wide, her face dripping with saliva and feminine juices. Meanwhile, you position your own throbbing womb-crusher just above Olivia's lower lips. Then, as Stacey moans at the sensation of Olivia's irresistible mouth, you plunge inside her. Instantly, her elastic pussy tightens around you, sucking you in and refusing to let go. You don't even try to fight it and hilt yourself inside her, prompting some panicked sounds from Olivia. In response, Stacey grabs her head and begins fucking her throat. "We let you breathe even when Finn was trying to **** you with his dick," Stacey growled. "We took care of that too." Olivia, in response, made a gurgly moan which made Stacey tremble. "God, this thing is so sensitive!" She complained.

You feel the same way. Every inch of you is buried in tight warmth and it feels amazing. You begin thrusting in and out, pounding Olivia's new and improved pussy, stretching it out and watching it contract back to incredible tightness all over again. It's wonderful, watching her belly bulge as you thrust in deep, feeling her tight walls trying to trap you inside, hearing your balls slap against her with each thrust. It's so wonderful. "Finn!" Stacey suddenly barks. "I can't!" You respond by hammer Olivia even harder, hilting yourself each time. "Then do it!" Stacey grits her teeth, making a low whining sound. Then she explodes. Olivia immediately orgasms, her insides wrapping around your cock like an army of wet of lips and slick hands, fondling and kissing every inch of you. You burst, pumping huge amounts of cum inside Olivia.

Olivia, still lost in the haze of orgasm, doesn't notice for a second. But you see it, watching her belly begin to swell a bit as you flood her insides. Meanwhile, as Stacey's cock does the same, she makes a **** sound, cum spilling out of the corner of her mouth and out her nose, even as she begins to swell slightly around the mid-section as well. Stacey finally pulls out, causing Olivia to cough, spraying Stacey's front with cum, which was followed by a stream of it flowing out of Olivia's mouth. Meanwhile, Stacey's cock continues spraying, painting Olivia's face and tits white. You pull out as well, Olivia's pussy overflowing with cum even as your continue cumming, splattering her thighs and stomach with pearly white strands.

You and Stacey both take a moment to catch your breath, both of you panting hard. "Damn," Stacey finally says. "That was really good. I've got to stop doing this," she said, gesturing to her cock. "I might get addicted to it." She looked up at you, a mischievious glint in her eye. "What about you, you ready for another round with another pair of lips?" You look down at Olivia's well-fucked pussy, her body splattered in cum and shake your head. "No, not really." But looking down at Olivia's face, one of total rapture, you do feel the tiniest twinge of doubt. "So, what next?" You ask.

Stacey studies Olivia, her cock at half-mast already. "I want to try her out. You can use one of her other holes." You nod, thinking about it. "Should we clean her off and out?" Stacey shakes her head. "Nah. If we do that, we'd have to write all the stuff down again. Plus, seeing her full of cum like that- it's kind of hot." You smile. "I agree. Is it really even sex if there's no risk of getting pregnant?" Stacey glares at you, but her cock twitched a bit. Just then, you notice a faint dampness beneath Stacey's cock, dripping down her inner thighs. You smirk at that, then gesture to Stacey. "Can you enhance my strength?" Stacey nods, grabbing the marker and writing on your arm, "Strength of 10 Men". You use that strength to pick Olivia up and place her on one of the pillows, so her cum-filled slit is facing the door. You scoot away from Olivia, letting Stacey climb up between her legs. Stacey does, approaching her friend's pussy.

You don't move, watching Stacey slowly begin to penetrate her friend, cum sloshing over her hardening cock. You both had written "Massive Amounts of Cum" on each other, just to enhance the experience. To prevent this from causing any problems, you had also written "Elastic Holes" on Olivia and Stacey, to ensure you only broke their will to resist. Stacey made a small noise as she penetrated Olivia. "Oh, this is weird. She feels different than you did. Plus all that warm cum," she groaned. "This is nice." She started to slowly drive her hardening cock into Olivia, prompting more groans from the latter. You didn't move, your cock hardening as you watched Olivia's toned ass move up and down, her pussy glistening as she pounded her friend with her huge cock.

"Stacey," Olivia moaned. "Harder, please." Stacey grunted. "I can't- I'll cum again." Stacey tried to continue going slow, but she was slowly speeding up, the sensations of Olivia's burning hot, elastic folds too much. You decide to help her out. As Stacey thrusts in, you come up behind her and wrap your arms around her, grabbing onto her modest breasts. Stacey freezes mid-thrust. "Finn?" She asks. You tweak her nipples. "You're soaking wet, Stace," you say, your cock slipping between her legs, rubbing across her wet folds. "Don't you want someone else to do the fucking?" Stacey shudders at the sensation, making her cock jump. Olivia gasped on the bed. "Finn, not now! I'm so close!"

You ignore her, nibbling on Stacey's earlobe. "If I'm wrong, just keep going." Stacey took a deep breath, her chest rising and falling beneath your hands, even as her nipples harden and stand erect. Other then that though, she doesn't move. So you drag her back, pulling her cum-slick cock slowly out of Olivia's pussy, leaving it exposed to the air. Then you lift her up a bit into the air, push your own cock up and gently lower her into your lap, impaling her on your foot-long bitch-breaker. Stacey takes a haggard breath as you slowly lower her down, shoving more and more of yourself inside her. After a glorious minute of her tight pussy engulfing inch after inch, you finally hilt yourself inside her, bumping into her cervix. "Shouldn't it be lower?" You ask. "I raised it," she whispers in between moans. "To make more room." You smile and thrust up, bumping into it. Stacey whimpers.

Stacey is now seated on your lap, her legs spread wide, her huge cock hanging in the air, dripping pre all over the bedspread. Olivia looks over at this from her back and begins running her cum-filled pussy. "Finn, don't hog her. I want some too." You roll your eyes at that. "Then show Stacey why doggystyle is so wonderful." Olivia nods, rolling over on the bed, then coming up onto her hands and knees. You are suddenly presented with her beautiful bubble butt, fat and plump like the rest of her. Her cum-sprayed slit beckons to you, dripping as she walks backwards on hands and knees, carefully maneuvering herself toward Stacey's throbbing cock. Finally, after nearly missing a couple of times, she makes contact, and Stacey slides back inside her pussy.

Stacey makes a noise of pure, animal pleasure and her pussy spasms. Even stationary, you're nearly taken over the edge. But you grit your teeth and hold on. Then, to set the pace, you push upward. Your cock pierces Stacey, driving up into her depths and banging on her cervix's door. Stacey quickly begins to match you, her lifting herself up and down shifting her cock in and out of Olivia's pussy. Olivia falls in line as well, pushing back when you thrust upward, trapping Stacey in between her fat ass and your thick cock.

Stacey is soon fighting in your grip, struggling to push downward or pound harder, but with your enhanced strength, it's like wrestling with a kid. She is not in control. You keep pounding her, and she thrusts wildly into Olivia, who is moaning with delight. "I'm so fuuuuuulllllllllll!" Stacey screams. "Harder, Finn! More!"

You ignore her. She's not in charge anymore. Then Stacey does something unexpected. "Sorry, Liv!" She says, pulling herself up and pulling her cock out of Olivia. Olivia gasps at the sudden lack of cock, but you're even more surprised as Stacey manages to push you down onto the bed. She is far weaker than you, but you are unbalanced for a second. You flop down on the bed and Stacey falls on top of you, your cock still buried in her pussy. She begins to ride you, driving you in as deep as your cock can go, flesh slapping together as she goes as fast as she can. "YES YES YES YES YES YES!"

She screams, sprinting to the finish line. You feel a familiar pressure building up inside you, the precipice of pleasure. But before you can assert control, Stacey hilts you in her one more time and squeezes hard. You lose control and explode, flooding her with cum. She instantly orgasms, making yours all the better, white-hot bolts of pure pleasure flooding your veins. Meanwhile, on the other side of her, her cock erupts, spraying Olivia's ass and back in a sheet of white, pearly strands. With that, Stacey collapses onto you, her chest heaving. You lay underneath her, content.