We drove to see her family this Labor Day weekend. Had a nice visit but by far the most interesting part of the trip happened Sunday afternoon.

My wife's parents decided to take our kids (both 12 years old) and my wife's sisters 8 year old son to see Guardians of the Galaxy and let us have the afternoon to go to lunch or shop or just relax. We decided to just relax at their place. Of course after 15 minutes or so, we were naked and the fun was under way.

I was sitting on the edge of the bed in the guest bedroom and my wife was sucking my cock and using her vibrator on her pussy as she keeled in front of me. We heard a gasp and I looked up and my wife looked around and there was her sister standing in the hall way staring in shock.

She is a single mom and I guess she was home alone since her kid was at the movie with ours and decided to walk over and see what we were up to. (She lives next door). She just walked into the house as that is the kind of thing that she does when her Mom and Dad are there and there we were having fun.

The funny part was, when she saw my cock. Apparently, she has not seen a cock in person since she was with the jackass who knocked her up and left when he found out. She was kind of stammering about being sorry and something else but her eyes were locked onto my hard cock in my wife's hand and she was still slowly stroking me. It was funny and hot at the same time even though I am not in the least attracted to her.

I thought about asking my wife if she wanted to let her watch but I knew it would be weird. Her sister said she was sorry again and backed away from the door and then left. My wife got dressed and went to get her and we all talked for a few minutes and I assured her it was OK and I wasn't upset. I told her that we aren't embarrassed and she shouldn't be either.

Monday morning before we headed back home my Mother in Law made a funny comment that she understood we were now performers and I said yeah, we are the family porn stars. It was funny and my sister in law was just red in the face. But I think she will probably masturbate thinking about what she saw, if she hasn't already.

oh im sure she will be fantasizing about you from now on. Don't be surprised if she starts flirting with you if not more

what the hell?! You're married. i don't care if the whole state sees me fucking my wife. i paid for it, I get to use it!!!! Of course when you are my age you hope someone sees you, my image could use the advertising.

Oh believe me, I wouldn't have minded if she watched us fuck. But it is my wife's younger sister and I thought it could make family reunions a little weird for her. Turns out she wouldn't have minded and since has told me that for a time when she was a kid, she and her two sisters shared a room before her parents added onto the house so each girl could have their own room and as a result, they saw each other naked often and even masturbated while one or both was in the room. They had a pretty open and honest family apparently. I always assumed it was less so since they were active in the Baptist church but seems I was wrong.

I've already told her that I have no desire to fuck her sister at all but the next time we are down, if she wants to let her watch us fuck I'd be OK with it.

Great story! At the least your SIL will have some great images to masturbate to and who knows what will come up in the future

Fucking hot. I used to date a girl where we would have sex in front of her older sister. They too were very open about sex, and we even watched porn together. I've had my cock being sucked, porn playing and her sister watching me get sucked by her little sister. Literally my head would be spinning as I watched her sister watch me cum. Makes me hard to this day thinking about it. I never asked to fuck her sister but I would have loved to!

When my wife and I were dating, we were making out on the sofa at her parents house. No one was home but her sister. I unbuttoned my wife's shirt and was sucking on her nipples when her sister walked up and started yelling at us to go to a bedroom or a hotel or something.

I was really embarrassed, but my wife told me her and her sister saw each other naked all the time and had masturbated together.

My sister-in-law is a lesbian, and would not be interested in watching at all. She is very anti-man and barely speaks to me.

My adult son walked in on me and my wife while she was giving me a blowjob to ask if she was going to make supper. We said just heat up leftovers tonight. When he left I said to my wife you already had your supper right?