I got in place in the store room and slipped the door into his office open. They’d been there a while. This was a new woman too. Dad had her on the carpeted floor. They were both naked, of course. I was looking at them from the side. The girl was younger than the others and on the tall side. She was blonde and had a nice shape. She was on her knees and her head was on the rug. Dad had a good grip on her hips and was pounding her young pus. She just groaned and wiggled her firm ass. Dad looked like he was close.
“Yeah baby get ready! OHHHFUUCCKKK I’m gonna cum!”
Her muffled voice came from the carpet.
“OHHHHHHHH DO IT! Ohhhhh cum in me!”
He gave one hard jam and held, grunting as his cum jetted up her baby ramp. When he was done he just held himself in there for a minute. They were both panting. He slowly pulled his wilting monster out of her and just kneeled as the girl rolled over and gave me a perfect view of, long legs, a shaved pussy covered in goo, two lovely C sized tits with huge nipples and my sister’s face! She lay spread eagled and smiling.
“Oh dad! I love the way you fuck!”
Dad was getting up.
“Well, it was your idea, Jackie. I would never had thought you were interested.”
“Oh man, John and I used to listen to you two fuck. Then I’d go back to my room and masturbate wishing my dad’s cock was in me.”
Dad grinned.
“If I only knew.”
Jackie giggled.
“Dad, I was sixteen, that’s bit early, you know.”
“True, so you and that monk of a brother actually listened?”
Jackie laughed.
“I don’t think he’s a monk dad. He’s just very career driven.”
Dad was getting dressed.
“Well, I don’t have to tell you. Ya gotta have some fun in life. So why did you wait so long to seduce your old man?”
Jackie stood up. I admired her. I hadn’t seen my older sister naked, well, ever. She’s statuesque, like mom but she oozes sensuality. She stood and made no attempt to get dressed as she talked to her father.
“Well, I never thought I could until I was here one night when you were giving some wife a good fucking. I was in that store room, watching.”
I freaked. I couldn’t get out fast without making a noise. But I was okay, nobody moved towards the door. Jackie continued as she looked around and found her thong.
“Well, I figured, since you already were cheating, and I already knew you were a sex fiend, maybe I should give you a try.”
“But I’m your father.”
She giggled as she hooked her bra.
“That’s what made it so hot. That turns me on. Fucking family.”
Dad laughed.
“Ever make a pass at your brother?”
Jackie paused and I stopped breathing.
“I don’t know how he’d react. We never talk sex and I have no idea how much experience he has.”
Dad just shrugged and got dressed. They chatted some more and made another date. I had to stay in that damn room another half hour before they both left and I could get out.
I sat in my car, thinking. I’d never seen incest, or read about it or looked at incest porn. Yeah I knew my sister was hot but I never tried to peek. Now I’d watched her fuck my dad and knew she might try and fuck me.