My first job out of high school was on a janitorial crew and the first weekend my boss (David) invited me and a few others over for beers. I was not legal to drink yet so he said if I had any I'd have to stay the night. After a few hours everyone else went home and my boss said he was heading off to bed and his wife Pam would prepare my room for me. He was in his mid 50's and she about 40 and quite nice looking. She had changed into a nearly see through lacy night shirt and showed me to my room and went about straightening things up and I could see quite a view and started getting hard. She then said to take off my clothes she would wash them so I'd have clean clothes for tomorrow. I kind of stopped and stared at this point and she said she'd seen lots of naked butts at her age nothing to be shy of. Still fairly hard I turn around and strip and hand her my clothes and quickly get into bed. She came back and said she wasn't tired and wanted to hang out for a while. I was still somewhat hard but kept positioned to avoid it showing but she said David rarely wanted sex and asked to fuck. I said what if he catches us but she said he was a deep sleeper and took pulled the blanket away and started sucking me. I warned her I was about to cum but she just sucked more. I was not a virgin but limited experience and this was my first blow job to completion. She kept sucking until I was hard again and then straddled me and she was extremely loud I couldn't see how he could not hear this. She came extremely loud and then wanted me to fuck her from behind with me standing up. After a few seconds of this I heard something behind me and David was standing in the door. I quickly jumped and tried to find something to cover myself up with while apologizing but he siad she needs to have her fun and he doesn't mind. She just remained bent over the bed asking me to please keep going. He said go for it, I thought this was super strange but had never fucked in the light before and could't pass this up so went back to fucking her. David sat down on a chair off to the side and after a little bit noticed he was playing with himself and she was saying mean things to him and how nice it was to have a real dick pounding her. To keep this short enough I ended up fucking her ass then they went to their room I went to sleep