I first met Christy about two years ago when my dad started dating her. He and my mom had divorced about 5 years earlier. Dad had finally met someone who made him truly happy and I was happy for him. I was 18 and a senior in high school at the time and me, my dad, and Christy would spend the summers at the beach. Christy was a few years younger than my dad and had an amazing body. She likes to wear clothes that highlighted her fit figure, and I never complained.
I had went off to college right after they were married. I would go back home during my breaks and stay in their guest room. Christy was always good about making sure I had food to eat and that all my laundry was done. I liked allowing her to take care of me in a way my mom never did.
It was summer break again and I was looking forward to going back home and seeing dad and Christy. I drove to the house and upon arriving, saw my dads car in the driveway. I let myself in, knocking as I did, and shouting "hello!" from the front door.
"Mark, you're here! It good to see you!" my dad said as he greeted me at the door. "So how's college treating you these days? Got a girlfriend yet?" he teased.
I wasn't very good with the girls. I was a huge nerd and didn't know how to act around them. This past year I tried going to the gym and working out to try and make myself at least look a little more attractive.
"No, dad, no girlfriend yet. But it's not like I'm not trying!" I answered.
"I can see that! You've been working out. You look good, son. Be patient; you'll find a smoking hot chick in no time," dad said.
Just then, Christy walked around the corner and greeted me with a huge smile. "Mark! Look at you! Someone's been working out! You must be getting all the girls nowadays." She grabbed my bicep and squeezed as she walked by. My heart skipped a beat.
Christy was wearing tight leggings that perfectly framed her round ass. The front of them were so tight that you could make out her pussy just slightly. She was wearing a tank top with a sports bra and I swear her boobs were way bigger than I remembered. Did she get a boob job? I guess I shouldn't be surprised. I knew dad was a boob guy.
Christy made us an amazing dinner and I headed off to bed early. I had spent most of the day driving to get to my dads and I was exhausted. I made my way upstairs to the spare room, just down the hall from the master suite where my dad and Christy slept.
I had been asleep for a couple hours when I woke up having to pee. It was late and dad and Christy had already gone to bed. I walked down the hall to the bathroom just next to the master suite. After finishing my business, I quietly turned off the lights and closed the door, heading back to my room. But when I exited the bathroom, I heard a noise that made me stop.
It was coming from the master bedroom. It was a light, rhythmic "thump...thump...thump". Oh my god - my dad and Christy were having sex and that was the bed frame making the noise. Immediately I pictured Christy naked, sitting on top of my dad, riding him with her huge tits bouncing up and down. I could feel my dick start to get hard at the image. The blood started to flow to my cock and it lightly moved in my boxers. I stood quietly outside the master suite door and listened intently. "Thump...thump...thump", and a light panting from Christy.
"Fuck me, baby," I could hear her say lightly. My dick got harder and started poking out of the front of my boxers. I guess I shouldn't be worried about someone seeing me, as it's just us three in the house, I thought. I reached down and pulled my cock the rest of the way out of my pants and grabbed it with my hand. I started squeezing and rubbing it, listening to the panting and moaning that was coming from the master suite. The rhythmic "thump...thump...thump" got faster and faster until I heard a low groan, which must have been my dad cumming.
"Oh yeah Christy, that's so good," I could hear him say.
I quickly and quietly went back to my room. I closed the door, locked it, and grabbed the lotion off my nightstand and a few tissues. I sat on the edge of the bed and squirted a little lotion on my still erect penis and started rubbing it in. I grabbed the head of my dick and slid it down over my shaft. I held the tissue at the top of my cock as I continued to rub furiously. After about 30 seconds, I came into the tissue and tried not to make a sound. I cleaned myself up and climbed back into bed.
A few more hours later, I woke again, thirsty. The bottle of water on my nightstand was empty so I got up to go to the kitchen to get another one. As I walked down the hall, I could see the kitchen light was on. Upon entering the kitchen, I saw Christy, bending over in front of the open fridge, looking for something.
She was wearing a black, lace teddy that covered very little. She was wearing thong underwear and from the back, I could only see the thin strap coming out of her crack and across her hips. Her ass was absolutely bare and perfect. As she was bent over, I could see her pussy just under her cheeks, peeking out of her panties.
She stood and turned and jumped slightly when she saw me.
"Oh my god, Mark, you startled me! I didn't hear you come in," she gasped.