I arrived home the other day and couldn't see anyone in sight. As I approached my father's bedroom, I over heard him and his wife having an argument. My step mom wanted to fuck but he was too tired to give her some dick. AS he went to sleep, she headed to the restroom to start masturbating. I continued to spy on her as she masturbated in the bathroom. Eventually, I got a little carried away and went inside the bathroom. She caught me right away. Instead of getting mad, she was glad that I was there and she quickly went on her knees and started sucking me off right then and there. Soon after, we took things over to my bedroom. There, I got a chance to penetrate her pussy and eventually even stick my cock in her ass. I stretched her asshole further than it ever had stretched before. After I properly fucked her ass, I glazed her tits with my cum.