It was a couple of weeks before Christmas and I was on my to my parents' house for the holidays. They knew I was going to be there for the big day, but I had decided to surprise my family by arriving a week earlier than I had told them I would. I hadn't managed to make it back home for my mom's birthday so I wanted to squeeze in as much time with my family as possible.
My parents, David and Michelle, are pretty typical parents. My dad works in IT and my mom works for a catering company. I'm the middle child at 21, with my 23 year old brother Nick the eldest child and my 19 year old sister Sophie the youngest. Sophie still lives with my mom and dad.
Us three kids look pretty similar. Sophie and I, aside from the age gap, could just about pass as twins. We both have mid length brown hair and honey-brown eyes and athletic bodies. She is a little more petite than me, shorter, skinnier, and with B cup boobs to rival my Ds. Nick is a lot taller than us, but he definitely looks like us in a male form. We all take after my mom more than my dad.
I parked my car out on the street and decided to leave my things there until I needed them later, and made my way to the house. The front door was unlocked so I let myself in (I would have anyway, I have a key of course) and went searching for any signs of life. The kitchen and living room were empty, so I went to the study, thinking my dad would probably working at the computer.
The door to the study was open and I looked inside to find that the computer screen had an abandoned, paused porn video open- not exactly what I was expecting. Then I heard a soft moan from inside. I crept closer to see what was going on, my curiosity getting the better of me- obviously no one had heard me coming into the house. There my sister Sophie was sitting in the armchair, shirt on but pants off, with a man kneeling between her legs lapping up her pussy.
Wait, that wasn't a random guy.
It was my dad.
I felt like I should run away and pretend that I never saw anything, but for some reason I kept watching for a minute. Neither of them had noticed me, and I figured I should keep it that way. I watched as my dad methodically worked on Sophie who was getting closer and closer to an orgasm, licking and sucking on her clit while she grabbed her boobs through her shirt. When she started to squeal I hurried away, going back out the front door and to my car, deciding to reverse my surprise.
I gave them a couple of minutes to cool down, hoping that they weren't going to continue, while I collected my suitcase and rolled it down the driveway to the house. I let myself in again- it would have been unusual for me to knock- but this time I called out instead of sneaking around. "Hello!" I called.
My dad came from the direction of the study to greet me. "Allie, what a surprise!" he said, pulling me into a hug. "I thought you weren't coming until next week."
"I wanted to surprise you," I said.
"Allie!" Sophie exclaimed when she came to the entrance, also from the direction of the study, "it's so nice to see you!" she hugged me too. They both seemed well put together, which impressed me. If I had just had an orgasm like Sophie had I wouldn't look so normal.
"Take your suitcase up to your room," my dad instructed, "do you want a cup of tea? Coffee?" he offered. I shook my head.
"No thanks. Where's mom?"
"She's out to lunch with Belinda," my dad explained. Belinda is my mom's mom- my grandma. "They should be back soon."
"I'll help you unpack," Sophie offered, picking up my smaller bag while I carried my suitcase up the stairs to my room.
