02/10/2026
My in laws have this wicked lake house (both big times in their fields of work) and every summer we go out there. Always, after a long day of partying on the boat / dock my wife and I decided to sneak off to our room.
She had me horny all damn day in that little two piece which showed just enough to make others imagination think. So my cock was primed and ready to go.
Anyways, I have her in all types of positions and then it happens. She’s in doggy facing the door but her head is in the pillow muffling her screams. I’m slamming as hard and fast as I can, it was perfection.
Then it happened.
The door opened and there standing at the entrance was my sister in law. Her jaw dropped and didn’t say anything. She was still in her swim suit, she’s a mom but she still has a great mom bod.
I looked at her in a panic but with my wife still moaning in the pillow, I didn’t stop. She stood there in the door way and I saw her move her hand to her mouth and smile super wide, like she was amused she caught us.
She and her sister are used to walking into each other's rooms and because it's habit she didn't think twice since it wasn't the evening yet.
She stared for a couple more seconds and gave me a thumbs up and a "shh" sign before glancing at my dick and quietly leaving.
I finished inside my wife right then as it made me so horny and then when we got downstairs I smiled at her sister and we couldn't look at each other without laughing.
They've seen each other naked a million times but I don't think she's ever seen her sister ass up getting fucked before. It was fun.
Poster:
Rick