Fuck Sasha by tricking her into thinking it's a strap on.

You think of Sasha and figure out that since she's a pretty naughty girl, she'd probably enjoy having sex with Jessica wearing a strap on. Of course, you wouldn't be actually fucking her with a strap on and she would probably feel the difference but there are many ways you can deal with that. You begin silently searching around the house and quickly find everything you need. Actually, you find most of the stuff you need in Sasha's bag...she's indeed a very naughty girl.

Then, with an evil smile, you discreetly reach the room where the other girls are sleeping, slowly unzip Sasha's sleeping bag and drape yourself over her, waking her up.

"Woah, what? Jess?" She says, confused, but then, with a finger on her mouth, you interrupt her.

"Shhh!" you say as you make yourself comfortable on her, establishing your dominance. "Careful girl. You're gonna wake the others!"

"What are you doing?" she whispers.

As you start to explain, you intermittently kiss her and grab her tits. "I liked it when we fucked earlier. I liked it very much and I wanna do it again, right now! I've found some...interesting stuff in your bag...including a strap on and I want to fuck the shit out of you with it!"

"Why did you look into my...ah, you know what? Doesn't matter. Listen, I'm interested. I've wanted you ever since we became friends, but...don't you have a boyfriend?"

"Indeed, I have one, but does he have to know?"

"I guess not" she answers.

"Then take that mattress under your sleeping bag with you. If we do it here, the others will wake up."

Sasha obeys, takes her mattress with her and follows you to the opposite end of the house, in the basement. You reach a small bedroom probably belonging to an absent family member. There is a strapon, some pieces of cloth and ropes on the bed.

"There, they shouldn't hear us here," you say "now, put that mattress of yours on the bed. It will be more respectful towards our hosts than using the bed directly.

"Well, I see you've found almost all of my stuff!" she says as she sees the equipment on the bed.

"Yup! I have," you say with a chuckle, "now, get on that bed so I can fuck you!"

Sasha obeys with a naughty smile. She places her mattress on the bed, and then lays flat on it. You use the ropes to tie her hands and feet to the bed before using the pieces of cloth to gag and blindfold her.

You then remove your pajamas, grab the strap on and manipulate it aimlessly so that Sasha believes you're putting it on, judging from the sounds, but you have no plans of putting it on. You are gonna get inside her with an actual dick, not with this unfeeling worthless piece of plastic and latex.

You then snap the belt of the strap on, same you would do as if you were actually putting it on. The click makes Sasha giggle in excitement from under the gag. You then very slowly put it down on a cushion on the ground. As you do so, you say "Are you ready for me?"

Sasha laughs and makes some sort of "Hmm...hmm..." sound as the gag prevents her from speaking actual words. You then get back up and make your dick come out of Jessica's vagina, hard as steel!

You get on top of her, press your dick against her entrance and begin thrust into her with it. You both start moaning in pleasure.

"Oh wow! This is my first time wearing a strap on. Is that really how it feels to be a man?" Sasha mumbles something incomprehensible.

"Oh, yeah! This feels too good! The power, the penetration, the dominance! I need to go harder!!!"

You increase the rhythm and strength of your thrusts. Sasha is completely caught off guard by this and her moans become muffled screams of pure delight. The bed also begins to make cracking sounds under the weight of your relentless ****, but under the pleasure, you slowly start to notice something else on Sasha's half-covered face: concern. She feels your dick inside her and she's obviously thinking this strap on feels way too warm, too fleshy, too real to be a strap on, but luckily she seems too overwhelmed with pleasure to think about it, so you decide to distract her even more.

You start fucking her with a vigor you never knew Jessica's body or your own were capable of. You are so relentless, it borders on the ****. You don't think you ever went this hard on Jessica before. Sasha's moans become louder and so do the bed's complaints. Both her body and the bed seem to be begging you to stop or else they might be broken in half by your aggressive pounding, yet Sasha herself seems to be using what little freedom of movement she has to position herself in a way that facilitates your dominant intrusion.

Finally, you start feeling your orgasm coming closer and closer. You try to delay it as much as you can, but it's no use. You reach your climax roughly at the same time Sasha does. If Sasha hadn't completely figured out you were fucking her with a real dick, she has now, as your warm cum quickly fills her and overflows all around, both on her and on her mattress. She starts mumbling in distress. Of course, you can't understand from the gag, but the message is abundantly clear: "What is this? What kind of strapon cums at the end? This is a real dick! Jessica, you're a man!"

You pull out of her, retract your dick back into Jessica's pussy, lay flat on Sasha and remove her blindfold.

"Shhh!" you say, "It's me Sasha. What's wrong?"

She seems to be slightly reassured, but you can tell from the way she looks at you she's not entirely buying it. You then use that little distraction to grab the pen, which you had hidden nearby, and to zap her.

"Sweet dreams!" You say as you watch her deflate.

You stand up and look at yourself in the room's mirror.

"Well, look at you, babe! You've had sex like a real man! It's a shame you won't remember it once I'm out of you...or...hmm..."

You realize you haven't tried all the pens in the box. Who knows what the others could do?

You also remember that promise you made Jess that you'd let her wear you. You've also got a deflated Sasha behind you and the normal Lauren and Trish sleeping upstairs. There's so much you could still do...