Husband and wife deflower their son in a threesome

I was fucking my wife Tina on a Monday night. My 7 inch cock was buried deep in her tight pussy. She was riding me with her tits in my mouth. My nuts were slapping her soft ass as I pounded her from below. I felt her pussy tighten around my member and I couldn’t hold it any longer. I was fucking her for the last 20 minutes.

“That’s it Bob. Make me cum. Shoot your load inside my tight pussy…” Tina screamed as I erupted. I could feel my ejaculation as it powered through my cock deep from my balls. My balls emptied itself into my wife. I was still pounding her as I came and I felt hot goo seep out onto my shaft and testicles. Her pussy was convulsing and I could feel her hot pussy juice flow onto my lap. We were moaning in unison as we climaxed together.

It was a week before our wedding anniversary. It had been 20 years since we were married. We got married when we turned 21. We have known each other since high school and college and we lost our virginities together. That is to say, we have only had sex with each other. My son Max was born two years later, a week after our anniversary. This year he turns 18. At the age of 41, I would say we looked great. I work as high school gym teacher hence I have toned muscles and broad shoulders. I am going slightly bald and my once six packs is currently one flat piece of tummy. My wife Tina is a totally hot MILF. She was a dancer in high school and college and currently works as a ballet teacher in prestigious dance school. After having our only child, she still continued dancing and managed to maintain her figure. She is 5 ft 6 with shoulder length dark brown hair and round brown eyes. Her face has aged a little but not too much. She has 34C breasts and her tummy is flat from a lot of dancing. Her dancing also has made her legs slender and long and toned. She sort of looks like the porn star Selena Silver. My wife doesn’t shave her pussy. She loves it natural and I sort of like it too.

“So honey, next week is our 20th year together as married couple. We should celebrate” I said as she rolled off me. My dick slumped onto my tummy, soft but still long. Some cum was still coated on the head of it.

“Yes dear” she agreed. “We need to spice up our sex life. After all it’s been 20 years.”

I couldn’t help but agree. I consider myself as an open and willing husband. I let my wife do a lot of things. Over the years we have tried many different things. On our 10th anniversary we started having sex in public such as beaches and one time in the elevator. On our fifth anniversary, we tried anal sex and from that day onwards we enjoyed it. I try to fulfill my wife’s sexual desires and this year was no different.

“What’s on your mind?” I asked. She gave a sly smile and sort of blushed. “What?” I asked again.

“Do you sort of notice how Max has grown?” she said quietly. I nodded. Indeed my only son has. From being a pudgy childish kid, max now looked more of stud. He had short light brown hair and broad shoulders like me. He was nearly 6 ft tall with toned arms and legs. He ran everyday and spent the weekends in the gym. The only problem was that he was sort of shy. As a result he hadn’t had a girlfriend before. He was good kid and I knew that he would make a lucky girl happy one day.

“Yes” I said.

“Well I sort noticed how good looking he has become and I feel sort of attracted to him. I often fantasize about him and me doing it together.”

I wasn’t shocked at this idea. I had thought of this too. I have read many incest stories online and have had a sort of fantasy. I also have acquired a fetish of threesomes especially when two guys are doing one girl. It would be nice to watch my wife being fucked. It would be nice to have her suck me off as she gets banged by another guy. I grew hard thinking of this and I grew harder when I realized that my son would be the perfect person. He loves his mother and would never hurt her.