Five weeks ago I was round at a friends house drinking beer with him and his mom, his father was out at work. We'd only been friends for about six months and were watching a movie we'd wanted to see for a while and had hired it. My friend fell asleep not long after it had started because he'd been gulping down his beer all afternoon. His mom lay him down on the couch and then sat on the floor in front of him. From where I was sat I could see up her skirt when she moved and she wasn't wearing any panties. I'd all but forgotten about the film and started to grow a boner as I got more and more glimses of her pussy. Feeling very awkward I excused myself and went to the bathroom. I left it for about two or three minutes before I returned. What I saw and did next has changed everything. Mrs B was knelt up in front of her son and she was sucking on his cock. She'd lowered his shorts enough to release his cock and she was slowly taking it into her mouth when I walked back in. Looking at me when as I entered she didn't stop what she was doing, she actually signalled to me with her index finger to come closer. Only when I moved around could I see she'd lifted her skirt up and her bare ass was showing, as were her very large labias. In a split second I decided to dive in, her pussy and ass looked like heaven to me and I didn't hessitate at all. My tongue was probing between her large labias, as my face was buried between her ass cheeks. I don't know what it must have looked like and I didn't give a shit at the time. I was drunk, horny and my friends mom had invited me to have sex with her, as she was sucking her own sons cock. Her pussy was so sweet and so inviting, I decide to see if she'd let me fuck her. Pushing my shorts down I put the head of my cock to her soaking wet pussy hole and pushed forwards. My dick slid in all the way, until my balls slapped against her clit. She let out a soft moan and arched her back. It was the signal for me to start to fuck her and that's just what I did. Her hot pussy felt awsome as it wrapped around my cock and looking down I could see her star winking at me. Putting a finger to my mouth I wet it and slipped it into her beautiful ass. Mrs B was being filled in all her holes and the slut was loving it. I was about to cum when she let her sons cock fall from her mouth, it was then I heard him say "Don't fuckin stop you bitch, I want to cum". Looking at my friend I realised he was wide awake and that he was watching me fuck his mom. Keeping his eyes on me, his mom turned her head and asked me to fuck her ass. I looked back at him to see him wink at me and nod. He watched my cock slide out of his moms pussy and then slowly slide back into her ass. I'd been slamming into Mrs B's ass for around a minute when her own son shot his load into her mouth, not once did she try to move her haed back and I could hear her gulping down his cum. It was too much for me and only seconds later I unloaded too, driving my cock into her ass as deep as it would go. I was totally drained when I pulled out but she wasn't finished, because as she put it "Hey boy, it's my turn to have an orgasm". I was lay on my back with Mrs B knelt above my face, she'd ridden my face and tongue and had cum all over me, her pussy juices flowing in my mouth, all over my chin and kneck. When she got up I could see my friend sat on the arm chair I'd been sat on earlier. His beaming smile told me it wasn't the first time he'd either watched his mom being fucked and licked. I also knew he'd probably fucked her himself, it was something I found out later, it to the truth. Mrs B and my friend have taken me into their own sexual world and I haven't enjoyed myself sexually as much as I have with them. I have witnessed him fuck his mom since that first afternoon, but so far we've not fucked her together. She insisted on me staying with her one morning last week after I'd called by. We ended up fucking in the shower and I'd only just cum up her ass minutes before her husband came home for lunch, my friend was out but she told him I was waiting for him. When he went back to work, so did I, sucking in her large labias and clit, as I fingered her hot c**t until she came in a shuddering orgasm. As long as Mrs B and my friend want me to a part of their lustful sexual lives, I'm more than happy to onlige them.