Watched Wife Her Son

My wife has always been kinky and is always ready for sex. We have a great sex life she loves to show off and loves giving head. Over the years we developed an open marriage and joined in on a couple swinger clubs. Several times while on vacations we picked up a 3rd and 4th guys and wife got shared. Which is why the story below while it surprised me it didn’t shock me.
Last year her son my stepson 31 came to visit with his wife for a week. We went out for dinner and drinks the night before they were leaving. We figured since their flight wasn’t leaving until 2:30 we could have a good time. We got back to our house about around 11 and we had several more drinks and smoked weed and had a couple of eatables my wife doesn’t smoke or do eatables but she did eat a half brownie which made it clear that the brownie and margaritas had her spinning. J’s wife said she was done and went to their bedroom J went in to check on her about 10 minutes later he came out about 10 minutes later and said she was out like a light he tried to wake her she didn’t move so he put some covers over her. The 3 of us talked for about another 30 minutes before we decided to call it a night. J said he was going to watch some TV before turning in. We went to our room got in bed my wife was horny she had taken all her clothes off and was laying across the bed on her back she said to come over and feed her she needed a snack and that she had a snack for me. I knew what that meant, I dropped my pants and walked over to the edge of the bed and she opened her mouth and I began to feed her my cock she took it after her throat adjusted I began pumping and it was good I reached down between her legs and she was soaking wet I knew she was horny and would get off just being throat fucked. She began to moan as I entered with 2 fingers and rubbing her breast with the other hand. After about 5 minutes I knew I wouldn’t last much longer as she was taking it all and I could feel myself getting closer. I pulled out and went down on her within 3 minutes she was ready I turned around and got on her and began pumping also feeding her my fingers that had been in her and were dripping with her fluids. As we both got closer she began to moan and said fuck me I am cumming fill me within 2 minutes I exploded and so didn’t she once we stopped she went down on me and clean me off by sucking her juices and mine.
About 5 minutes she got up and said she was going to get a soda in the kitchen she put on a pair of my boxers and a tank top. I went to the bathroom which has 2 doors one in our room and one to the living room. I got back to the doorways and could see that the TV was on her son J was laying on the couch and dry humping the couch she was standing there watching him he was face down in the couch just humping the couch she stepped closer to him when she did he reached out and grabbed the boxer and gave them a pull at them and they came down she didn’t move she was just staring at him humping the couch. I could see clearly because of the TV and the way the couch was positioned, he put his hand up to her shaved wet pussy and began rubbing her she opened her legs about 6 inches which gave him better access she just kept watching him, she had my load in her so she was soaking and I could tell by the look on her face she was getting ready to have an orgasm she looked up at the ceiling her hips were beginning to shake and she let a low out a low moan and began moving her hips humping his fingers. He picked his head up and pulled her toward him when she stepped forward he picked up his head and rolled to his side picking up his head and began to lick her crotch she opened her legs more she bent her knees for him then she began squeezing her breast he reached up under her shirt and grabbed her breast she lifted her shirt he was pinching her nipple with his head between her legs she was now moving her hips I just stood there watching, neither of them could see me not that they were concerned. He moved his head from her legs got up an immediately went to her nipples and sucked them then he stood up with his dick was sticking straight out he pushed her head down, she dropped to her knees she just began sucking him when she did he moaned and said yes take my cock and began face fucking her with in 2 minutes she was doing her thing and deep throating him and he was twisting her nipples the more he twisted she would moan and slurp on his cock. He moved her to the floor on all fours and began to fucked her doggy style he began to pound hard after she was moaning I could hear his balls slapping against her wet pussy then I heard her say yes fuck me, fuck me he began to tense up when he came in her they both said yes. When he pulled out of her he pulled her head to his cock and she began sucking and cleaning it off J said taste yourself and my cum bitch you love being a bitch don’t you. She didn’t say anything but nodded her head yes.