My gf and I were on the way back from a movie and had to go right past my mom's house, so we decided to drop in and see if she needed anything. We let ourselves in and made our way towards the back, family room, where we could see the TV was on. We got to the kitchen and were about to announce ourselves when we noticed mom was not alone, Aunt Cindy, her older sister, was working her over with a rubber cock.

Lesbian porn was playing on the TV, both of them were naked, and Aunt Cindy's toy was one of those harness type where she was the guy. Mom was bent over the arm of the couch and Cindy was really giving it to her. About that time my gf reached her hand around behind her and started rubbing my crotch.

We were both just frozen there watching my mom and aunt go at it. My gf pulled both of my hands around her and placed them on her breasts, then started grinding her ass against my raging hard-on. By her breathing I could tell my gf was about to start moaning, so I decided it was time to leave.

I literally had to drag her out of my mom's house and force her into the car. She took her panty off and openly fingered herself and played with her boobs all the way to our apartment. She actually leapt out of the car and wrapped her arms and legs around me. She was way past needing any warm up!

I opened the door and we fell into the apartment. I didn't even get the door shut before my gf was on top of me. We didn't even make it back to the bedroom for over an hour, all the time fucking with the door wide open. We were at it in the bedroom into the wee hours of the morning. I know I've never seen my gf that turned on before.

I know my gf totally enjoyed what she saw, I even think I heard her say, "Fuck me Cindy" and "Lick me mom" during the night.