My sister and I share an apartment. We have a St. Bernard named Rex.
One ordinary day I told my sister bye and I was headed to work when I realized I forgot my work keys.
So I had to turn around and go back.
When I open the apartment door I saw my black sister completely naked on her hands and knees on her yoga mat wit Rex sniffing around her.
My first thought was ewwww my sister, but she had a very fit toned body and the way she was positioned I could see her tight ass and inviting pussy.
I thought maybe she was working out and Rex was getting in the way. But that’s when I noticed the tv was on and it was showing dogs fucking like porn for dogs.
That’s when I noticed she was trying to get Rex to mount her. He had cloth around his feet I guess too keep him from scratching her.
Eventually he mounts her and I can see his pink dog cock furiously trying to find her pussy. He finally his his mark and ravenously starts pounding her chocolate pussy!
It’s over fairly quickly, I see this base ball sized dog knot slip past her pussy and my sister lets out a scream. Although the problem was it got stuck. Rex pulled my sister around the living room trying to break free.
That’s when my sister noticed me. I had no idea what too do. I didn’t want to call/tell/ask anyone all I could do was stop Rex from moving around so much my sister with embarrassing tears in her eyes said it would naturally pop out.
When it did my dick got on hard, it left my sisters chocolate pussy with a gaping hole, and cum spiting out of her vagina. Too make matters more embarrassing Rex walked over and started licking my sister, my sister shuttered from an orgasm as Rex cleaned up the mess.
My sister got up and limped to the bathroom cum still dripping out her vagina.
Source: reddit.com/r/Erotica/comments/h9g5yo/caught_my_black_f20_sister_fucking_our_dog