My wife, me and a married couple, who we had been friends with for a couple of years, went out to a bar. Everyone had a little more to drink than they should have. Once the bar closed they invited us back to their place. We had more to drink and the husband eventually passed out. His wife had me bring him into their bedroom and began to undress him for bed. His wife was pretty drunk too. My wife was in the room as the husband was slowly being stripped down. When he was down to just his underwear his wife told my wife to stick around to see a nice big cock and just after saying that removed his underwear. My wife was checking him out and was giving me looks to see if I approved of her looking at him. His wife made mention of how he isn't as big as usual and began to suck him off. My wife and me were looking at each other not knowing how to react so we both just watched. His wife gave up and said it was no use and that she was too tired so we left the bedroom and went back out to their living room. We all had more drinks and finally his wife began to pass out. My wife suggested we put her to bed. My wife began to remove the wife's clothes and once down to her bra and panties stopped. She looked at me, paused, and then said she shouldn't be doing this and took the bra off. She said I got to see her husband so it was only fair. My wife looked at the bra and laughed when she saw the size and realized it was padded. I realized the bra really enhanced her as without it she had very small breasts. My wife took off the panties now and we were surprised by what we saw. She had tattoos that were not what we would ever expect someone to have. The word “FUCK ME” was tattooed across the top of her pussy in rather large letters. Down the sides of her pussy was tattooed “EVERYONE” on one side and “WELCUM” on the other. It looked like “Welcome” was intentionally spelled “WELCUM”. She never talked or made mention of sex ever when she was with us and seemed so conservative but seeing this now made us have a different opinion of her. I think we may have revealed more that we wanted to about her. The couple was now passed out naked on their bed with me and my wife seeing them. I think me and my wife both found it a little arousing. It may have been the alcohol but my wife and I began to make out on their bed with them naked beside us. We took all our clothes off and were fucking right beside them. It was a good fuck and we took a break after we finished. We didn’t intent to but we fell asleep. It was a few hours later when the husband woke up which woke me. He saw all of us naked on the bed and immediately took interest in my wife. He grabbed one of her breasts which woke her up. My wife saw who it was and then glanced over at me. She didn’t stop him and when he then ran his hand down between her closed legs she closed her eyes and spread them. He looked at me and pointed to his wife. I then began to run my hands over her breasts. Her nipples got hard very quickly and she now awoke. She was taken back with what I was doing but when she glanced over at her husband and saw what he was doing to my wife that she just relaxed and put up no resistance. We took turns watching and doing things to each other which were very arousing to watch. When the husband tried to fuck my wife she put up resistance to it. He had performed oral on her as well as fingered her with no problem but when he tried to put his cock in her she stopped him. It was the last and only thing left that none of us had done yet. I didn’t know if I should try it with the woman I was with so I held off. The husband kept trying to do it with my wife and finally my wife gave in. When his wife lay back and spread her legs I knew it was our turn to do the same. We were now fucking each other’s wives and one thing I noticed which I thought was very cute. The woman I was fucking reached over and grabbed my wife’s hand and they held hands while we fucked them. My wife felt very embarrassed and ashamed afterwards that not only did she do sexual things in front of others but that she let another man inside her. Apparently the shame didn’t last too long because she had already invited them over to our place for the night explicitly for the purpose of another spouse swap.