Thanks to everyone who's left comments on the earlier parts of this story. This one goes in a slightly different direction so if that isn't your bag, please skip it.
***
I was once again staring with vacant expression, performing the roll of a sex doll. I also noted again how men tended to treat me rougher when I was doing my sex doll routine. Rob, my boss and friend of my parents, was savagely pounding my arse in the doggy position, slapping my rump as he had his fun with my body.
I was allowing my mind to observe the scene without experiencing it so I could avoid flinching and keep up the fantasy that I was his sex doll, there to be used for his pleasure.
He slapped my arse once more, as hard as he could, then roared loud as I felt his hot seed hitting the inner walls of my abused back passage. Jet after jet of the hot fluid shot up my bum - it felt like he hadn't cum in months but I knew he had cum just the night before.
"Oh, God," he panted. "Okay, you can clean me up now," he said as he slipped out of me.
I came back to life and turned to face him, bending towards his crotch as he wanted.
"You really like this part don't you," I said with a smile before putting my tongue to work on cleaning his sloppy meat.
"You bet I do. Oh, wow," he said as I gobbled up his wilting cock. "Will I see you tomorrow at your parents' barbecue tomorrow?" he asked.
"Mmmhmmm," I murmured through his slimy meat as I licked up the mess from our lovemaking.
***
The next day, I arrived at my parents' house late as I'd been working on a problem with one of the new prototype dolls and had lost all track of time. Just as I parked on the street outside my parents' house I got a call from Rob.
"Hi Rob, I'll be there in two secs."
"Actually, I was calling to ask if you could bring a couple dolls when you come over. News of what we've been working on has got out and a few of the guys have been asking me about them. I'd love to give them a demo."
"I have a Lexi in the boot."
"I think a Nikki would go down better with this crowd," said Rob and I could hear the grin over the phone line.
I bet a Nikki would be popular with that audience - all my dad's old buddies would love to screw a doll that looked like his daughter. Dirty bastards.
"I can go to the office and pick one up," I said, getting back in the car.
"No, no, there's not enough time. By the time you get back, the party will be winding down."
"I guess the Lexi will have to do then."
"I guess so. That is, unless..."
He left the rest unsaid but I caught his drift. He wanted me to play the part of a sex doll again. But this time, not for co-workers and strangers but for friends of my parents. He was really getting off on prostituting me out like this. But then again I was getting off on it too.
"Okay, fine," I said eventually, "I'll set up in the garage. Bring the first guy through in about ten minutes,"
"Thanks Nikki, this'll be great, you'll see. I'll tell your parents you couldn't make it in the end"
So that's how I found myself standing mannequin-still in my parents' garage on a glorious hot summer day instead of eating an over-done burger by the pool. I was wearing my new bikini - I'd bought it for this get-together and by golly I was going to wear it.
"Here we go," said Rob, showing in Pete, his and my dad's oldest friend. The three of them used to be called the Three Musketeers when they were kids growing up on the same street.
"Oh Nikki, sorry I thought you couldn't make it," said Pete with surprise. I caught him checking out my body in my skimpy white bikini and then blushing. That's how he'd greeted me ever since I grew my tits but I didn't mind. Then he looked confused when I didn't respond.
"This isn't Nikki," said Rob as he guided his friend closer to me, "this is our latest doll, the Nikki. She modelled for it as well as heading the development team that built it but it's just a doll." To emphasise this point, he suddenly slapped my arse hard enough to leave a red mark but I didn't flinch.
Pete came closer and looked directly in my face. Then turned to his friend, uncertain.
"Are you sure? She's so real."
"That's the idea," said Rob with a grin. "She is exactly the same as our Nikki, right down to the red mark that just showed where I slapped her arse and the goosebumps on her arm because it's cooler in here. It's all to make the experience as lifelike as possible."
Pete still didn't seem certain but he touched my face to see how real I felt.
"My god, this is amazing," he said softly. Then his hand dropped down to my tit, which he squeezed. "I've wanted to do this for such a long time!"
"Well you can do that and a lot more now!" said Rob. "You have fun and I'll be back in say half an hour with the next person who wants a test drive."
"Right, yeh," said Pete only half-listening as he mauled my massive tits.
Before long, he had removed my bikini and was slobbering over my nipples.
"They even get erect like real," he marvelled under his breath.
Then he lay me on a dust sheet he lay on the dirty floor and he slipped his twitching cock into my cunt.
"Even gets wet like real!" he said as he impaled me fully in one thrust.
Pete, it turns out, is a workmanlike lover, at least when he thinks he's fucking a doll. He ploughed away in me with the steadiness of a metronome, just occasionally squeezing or licking a tit, until finally he cried "oh my God" and came deep in me, shuddering, and collapsed.
Just after Pete had pulled his softening cock out of me and was getting dressed, Rob made another appearance.
"Hey, how did you get on pal?" he asked.
"Fantastic," said Pete as he buttoned up his shirt. "Just bloody fantastic. Wish she had been real but that's as close as I'll ever get."
"Don't we all, pal," said Derek, another of my dad's old friends.
Derek didn't seem as surprised to see me as Pete had been so I guessed Rob had told him what to expect. He still took a very close look at me as he picked me up and posed me on my feet.
"You guys have fun," said Rob, "you have about half an hour."
"And you say all three holes are available?" asked Derek.
"That's right," Rob smiled and then left.
So I guess I knew what was in store for me.
Before long, Derek had me bent over with my face in his crotch, his cock knocking on the door to my throat as he face fucked me. I had to time my breathing for when his cock wasn't blocking my windpipe without making any sounds that would give away that I wasn't a doll.
"It salivates like real," he marvelled. "That should be enough," he said when I'd drooled all over his cock.
He pulled out of my mouth and moved behind my bent form. He placed his slimy cock head on my little pink balloon knot and took a solid hold of my hips before slowly forcing his way into my butt.
"Oh good God, that feels amazing," he muttered as he bottomed out in my bottom.
Then he drew almost all the way out and slowly slid back in. Before long, he was reaming me with impressive force and speed, slapping my arse cheek with relish.
"I wish you were real, how I would fuck you Nikki!" he talked dirty about what he would do to me if I were real and not a mere inanimate sex doll while he brutally fucked his friend's daughter in the arse.
"Wow, still going strong I see there," said Rob as he re-entered the garage again.
