One time I was reading my book and one of the boys came in and strapped in my feet to the end of the bed. We all have straps on our bed so the boys can practice without us squirming too much. I was trying to read, so I was a little exasperated, but I didn't mind too much. Then he started sucking on my clit and fingering my pussy until I was nice and wet. My hips started to buck involuntarily. He almost made me cum four times before he whipped out a vibrator and held it on my pussy. I came with my hips bucking, and then he kept the vibrator there! He was an older boy trying out a technique he must have learned. I cried out as he held down my hips and kept the vibrator pressed on my overly sensitive clit. I came again and again until he finally let off and made me suck his hard clock until he came on my breasts. Forcing me to cum must have been really exciting for him!
The next day was my 19th birthday, and one of the boys came and told me daddy wanted me in the sex room. When I entered the room, daddy told me happy birthday and brought me over to the area of the room where we are supposed to pee in the cup. I squatted down and daddy spread open my labia and put the cup under me. He rubbed my clit and I forced out some pee. He kept rubbing and rubbing until there was no more left. Then he slapped my clit and helped put me in the chair. He strapped me in, only this time I noticed it was a different chair than the normal ones. It held my legs up so that my butt was exposed like I was halfway through a summersault.
Eddy started shaving my pussy. He shaved it until it was smooth and hairless. I liked it a lot, especially since the oil Eddy used made my pussy feel cool and exposed. "Since you're older now, you get a special birthday treat," Daddy said as wheeled over a fucking machine. He put some lube on his hand and rubbed my asshole, slipping his finger in to get everything nice and slick. I squirmed and he slapped my clit. "Hold still, darling." Then he eased the fuck machine's dildo into my asshole and turned the machine on low so it slowly went back and forth without leaving my ass. It felt way better than any anal I've ever felt in the classroom. I tried hard not to squirm. "Good girl," said daddy, and he slid a dildo into my pussy. I was surprised at the double penetration, but I didn't squirm away.
Once daddy saw I could handle the double penetration, he wheeled over another fuck machine and hauled it up on top of the one fucking my ass. He guided it into my pussy and turned it on medium high so it was fucking my pussy pretty fast. I gasped and grabbed at the arm rests to steady myself. Milk was starting to leak from my nipples. Daddy saw and hooked me up to the pump, and soon milk was shooting from my hard nipples. "I'm going to see how long my big girl can last like this," he said, "and when you're on the edge of cumming you let me know, and I'll decide which vibrator I'm going to use and when I'm going to let you cum." I nodded and held on tight while my asshole and pussy were fucked and my nipples sucked empty. Eddy watched while he stroked his hard cock. It was his reward for doing such a good job with our pussies.
After a few minutes I could feel myself right on the edge. I motioned to daddy and he came over and slapped my clit several times until I couldn't help but squirm and moan. Then he walked back to the wall where he kept his instruments and took a long time picking out a vibrator. He finally picked out one that was like a hitachi, only the head was very, very small so it could be applied directly to the clit. He came back over and slapped my clit several times, then stopped. He turned up the intensity on the fuck machines so my ass was being pounded hard and I was shaking I was so close to cumming. He slapped my slit again. I moaned. He slapped it again, harder. I cried out. "Please daddy, I want to cum!" He slapped my clit three times, paused so I came just a little bit back from the edge, then slapped three times again.
Then he put a device on me that spreads the labia and clitoral hood to expose the clit. Then he slowly rubbed it with little circles. I moaned, I could feel myself getting closer and closer. He pulled out his own hard cock and rubbed it with one hand while motioning for Eddy to come closer. "If you last until I say zero," dad said to me, "I'll let you cum. Otherwise, I'm going to pull away and you won't get to cum. Can you last until zero?" "Yes!" I panted. "Ten... Nine... Eight... Seven..." My pussy was throbbing as he continued slow circles directly on it with his finger. "Six... Five... Four... Three... Two..." He paused for several seconds, torturing me, his circles around my clit getting faster. "One..." He paused to spank my clit again, and I almost came. My hands gripped the arm rests. Please, soon!! I thought. "Zero." And with that he pressed the vibrator onto my clit with the speed on high. I moaned and screamed and bucked as I came. Then he and Eddy shot their loads into my open mouth. "Happy Birthday, honey".