Mike was telling her how hot and tight she was and Sue was telling him to fuck her hard. He started making small strokes gradually lengthening them as she opened up more. He was stroking fast now pulling almost all the way out then slamming back it. Even with this huge dog cock wedged deep inside me I was wondering what it would feel like to have Mike’s cock in my ass. I could see Mike’s big balls slapping against Sue’s clit. She cried out she was cumming. I could tell Mike was getting close because his balls were drawing up. He had lasted a long time after fucking me first. Just as he started cumming in his wife’s bowels the dog started to try to pull out of me. My belly felt so very full of his seed. He was starting to shrink some, but the seal was still pretty tight. His knot was pressing on my G-spot and I could not help giving up to an orgasm myself. My pussy started to powerfully contract and actually began to push him out of me. His knot suddenly popped out followed by his well used cock. I fell forward on to the grass exhausted.
I saw Mike pull his flaccid though still thick cock out of Sue’s ass. As he moved to a chair to sit down she squatted and squeezed out the load he had shot up into her ass. It was a huge amount and oozed onto the grass. As the last globs came out the dog made his way over to her. He sniffed the sticky load that was on the grass below Sue and lifted his leg and peed on it. We all watched this act dumbfounded and then broke out laughing. Always the dominant dog he was making sure we all knew it. We all relaxed in the chairs and had something to drink. It was very late and I needed to get the dog back to his house. I stood up and gave both Mike and Sue a kiss and walked out into the alley with the dog and took him back home. Getting back to my own house I took a shower and put a nightie on. I crawled into bed with my sleeping husband. Even though I was worried about what might have happened tonight I was so tired I went right to sleep.