My wife(40) at the time was pregnant, and it was Thanksgiving weekend, so she couldn't travel. My parents, dad(56) and my mom(50) drove to spend the weekend with us. Dad was a salesman and mom was the organist/pianist at the church they were attending. They usually stayed in the guest room.
When they walked in the door, we greeted them with hugs as normal. My wife is the same size as my mother, because I have been in love with my mother since I was a teenager and she was a suitable substitute when having sex. I could close my eyes and really believe she was my mother. My wife was 15 years older than me. It was no secret. She was shaped the same, and had big boobs, just like mom. No one dared bring up that accusation. Appearances, you know.
So I was used to hugging my wife with my hands on her ass and giving them a squeeze, grinding my cock into her. I guess when I hugged my mom, muscle memory took over and I did just that. She said, "you hugged me like I was your lover. I liked it."
Our guest room only had a full bed, so dad slept there downstairs, and mom slept upstairs in the den, which had a bed in the corner. There were also two couches, and the big screen TV. Mom and I typically stayed up late when everyone else went to bed.
I asked her if she wanted to watch a movie, and she agreed. She said, the last time I was here, I looked for a naughty movie, but I couldn't find any." So mom was looking for porn in my movie collection? Well let's just fix that problem right now. I reached behind the movies on the bookshelf for one of the many I had stashed from my wife.
"You have to know where to look", I said. And looked over my shoulder at her and smiled. I popped the tape in and watched Taboo 1 with my churchy mother. She is still wearing her pants and blouse she wore for the trip and it's almost midnight. I asked her if she wanted to change into something more comfortable. She said, "yes!" And hopped off the couch to go dig in her suitcase I dragged up the stairs for her.
She said, "don't look, naughty boy." She started to undo her pants and I kept watching. She rolled her eyes and continued. "Nothing you haven't seen before." And she dropped her pants. Then, she pulled the blouse off and got a tshirt to wear out of her suitcase, bending over with her back to me. She was wearing those big, nylon, granny panties stretched across her big, juicy mom ass. I was so hard. She walked around the couch in her panties and bra, and asked me to undo her bra for her, sitting right next to me.