Pounded into submission

Once she's got the dildo set, and it fully lubed. She raises the machine so that it is thrusting with a slight downward angle as per the profile description. She then gives you a long kiss before getting onto her hands and knees to submit to the fucking that she is going to receive. Getting the machine full retract, she backs up onto the dildo and placing it at the entrance to her pussy while leaning as far forward as she can.

"Almost time Mary. Soon I'll have been fucked by this machine using this BBC we have, just like how it would be in person. I didn't think I'd be this horny over the idea of getting strapped into this machine and having control taken away from me. It's very exciting to think that this big black cock is going to stretch me out further than you ever have. Looks like you're going to have to just sit this one out though, as the vibrator is still charging and won't have enough battery to last another hour."

Strapping her ankles onto the bar, you hear a click as once both straps are full secured, and her phone pings once it's done. 'Ankle straps secured to a subject, are you the current user or controlling it for someone else?' She taps that she is the user and another prompt appears. 'Do you consent to allowing this profile to use max extention and speed settings should they be applied?' After having already used full speed with the smaller dildo, but not max extention. She after a few moments of deliberation taps yes to confirm she consents. A final prompt appears 'Do you wish to enable profile control?' and with a final tap yes, the machine comes to life.

Slowly the machine pushes the big black cock forward stretching your wifes pussy lips around it. It stops for a minute after getting just the head in before pushing further forward a couple of inches and stopping again. Clearly the person who created the profile wanted to make sure that the user would have time to adjust to the size of whatever BBC toy they were using. While Jane is still very turned on, and extremely wet from her previous fuck. Her moans and cries from being stretched out by the BBC make you wonder if this was a good idea. Though you know at this point your not going to be able to stop it. While you can stand up, you can't use your hands easily. You'd basically have to fall onto your back and feel for her phone, and you wouldn't be able to see her phone to stop it.

"Oh god this is such a stretch... I can't believe it's going inside me... The other BBC we have isn't much smaller... The feeling of this larger one makes that one feel small..."

The machine thrusts forward a one more time and stays there for a couple of minutes before slowly pulling back to where the head of the BBC toy pops out of her pussy. With the angle you have from the bed, you see the gape her pussy has, just start to close before it thrusts forward again. This time though, it doesn't stop at the same point during the thrust and goes in slightly deeper. Again it holds itself there, though it doesn't stop Jane from trying to fuck herself on it slowly. It then pulls out slowly again until the head pops out. With less of a pause this time, it thrusts in again going quite a bit deeper this time, and holding.

"OOOOOOOHHHHHHHH GOOOOOODDDDD! SSSSOOOOOOOOOOO DDEEEEEEEEEEEEEEEEPPPPPP! This is intense already, and the phone says this is a warm-up phase. Still got the full hour after this."

While nervous that this fucking is going to make your wife not want to have sex with you again. You're still incredibly turned on by the sight of her pussy gaping open after the BBC gets pulled out before it stretches her again as her pussy tries to close. The fact that this is only the warm up phase of the profile, and it's not started the actual main part yet makes you wonder just how much this is going to change things. You're still leaking precum even without the panty vibe teasing you. An even though your wifes panties are dryer than when you got stuck here, you can still smell her scent from her getting fucked by the BBC toy.

Pulling out, and thrusting again several more times during this warm-up period. The machine thrusts deeper with each new thrust, to where the angle forces your wife to bend further over and have her shoulders on the floor. After a final thrust which still doesn't look to be the full extention of the machine, you hear an alert from her phone. You can just about read it 'Warm-up routine complete. Proceeding with programmed routine in 5 minutes' before it disappears of the screen automatically.

By this point her pussy is taking longer each time to start to close from each time the BBC has been pulled out. There is a thick white cream ring on the toy, marking the deepest point that the dildo has gone to in her pussy. Judging on where the ring is. It's still got at least 3 inches to go before she'll have taken the full length. During the 5 minute break she reaches over to a bottle of water and takes a long drink of it. Then she looks towards you and smiles a big silly grin, before whispering that she loves...

Before she can finish saying what you know to be 'I love you' the machine starts fucking your wife with quick deep thrusts. Each thrust pulls out all the way, then thrusts in as far as she's already taken. Her moans are gutteral, as while it's not as fast as the first machine fuck. The size of the BBC toy is making this more intense for her because of the stretch in her pussy. The stretch and the depth are enough to hit her cervix, and she is feeling every thrust against it.

After almost 15 minutes of solid hard fucking from the machine it starts to speed up and go deeper. Physically pushing Jane with each thrust, if her ankles weren't strapped in this would be pushing her away from the machine. With her current situation though, it's acting like a pile driver. It's doing several quick thrusts followed by a longer slower thrust. The thrusts are pounding against her cervix, and the thrusts are only trying to go deeper. The moaning, and cries of pleasure as you can tell at least 4 orgasms have been pulled from your wife and you've still got 45 minutes to go.

"Oh god... ooooooooohhhhhhhh... Mary... This feels so good... I can't imagine being fucked this hard by a person... But oh god, is this pounding that I need... Not... Your... Sissy... Attempts... With... Your... Tiny... Clitty..."

Orgasming harder than you've seen her before as she's trying to speak, the thrusting is going deeper, and deeper. The thrusts are using almost the entire length of the BBC inside her. The head barely staying in before it pounds back in. As the thrusting is getting harder, the machine starts to fully pull the BBC out of her again. She's shakes with pleasure each time the dildo reenters her stretch pussy. She's practically limp on the floor as she's getting pounded, but because of where she positioned the machine. She can't fully fall onto her stomach, as her shoulders are being held in place by the padded legs of her vanity stool that is pushed against the vanity itself.

All of this goes on for another 15 minutes until the machine stops deep inside her. It then very slowly pulls the BBC all the way out of her, and just pauses. Her pussy is wide open right now. There is a thick white liquid right on the big black cock that has been fucking your wife for the past 30 minutes. You see that there is now what looks to be an inch left before she'll be bottomed out to the balls of the BBC toy. After 10 minutes she slowly comes too, and the machine hasn't started back up. You didn't see her reach for her phone once during the hard fucking, so she couldn't have stopped it. You look over and it says 'Profile paused. Recommend user get hydration before resuming', below this message is a timer that has another 10 minutes left on a countdown.

"Mary, can you come over here so I can release your hands. I need you to get me another bottle of water before the timer finishes and it resumes fucking me. This has by far been the hardest, deepest, and best fuck I've had to date."

You stand up and head towards her. Looking at her pussy you can see it's only just now started to close up, but it's still gaped wide open. Kneeling down next to her she reaches up and just about manages to undo one of the cuffs before flopping back down into position again. You briefly contemplate turning the machine off and stopping this, but you physically can't move to do it. With how horny you are, it's clouding your mind. You quickly make your way downstairs, grab a bottle of water, and get back up stairs helping her to drink it. She drinks the majority of the bottle with 2 minutes on the timer to spare.

"Thank you baby. I hope that you're enjoying this. Though based on how wet your panties are. My adorable sissy girl is enjoying this alot. Do you love seeing a big black cock dominate meeeeee..."

Before finishing her sentence the machine does a hard thrust forward until only 2 inches of the BBC toy are left. It then quickly pulls out and thrusts deep and hard again until the an inch remains. The first thust made Jane scream out in pleasure, before she starts to convulse as an orgasm over comes her from the first thrust. One thrust caused her to orgasm this quickly. Granted that was after she'd already been fucked for 30 minutes, but it's still a shock. As much as you want to continue watching though, you need to get a drink and use the bathroom.