When my wife and I had been married for about seven years, we had an experience which would change our sex lives completely forever. I came home from work one evening, to find my wife all sexy in one of her sheer nightgowns. I immediately expected a sexual evening, but was I ever surprised! I digress only to explain just what a sexual creature my wife was. Marilyn stands 5'6", has wonderfully pear shaped breasts, with perpetually erect nipples, which I love to suck. Her pussy is in a constant state of arousal and she loves to fuck! We've tried all the positions known to man, and she likes dog style the best. She gives great head, loves to lick and suck my prick, but she does not like to swallow my cum. Getting back to my story, she looked lovely, but I could tell something was amiss. When I asked her what was wrong, she wouldn't say, only sat on the couch and began to cry. I sat next to her gently holding her in my arms, telling her how much I loved her and that she could tell me anything. Finally, between sobs she said, "Your brother-in-law sure is a horny, little guy." I couldn't imagine what, or who she was talking about. Finally she stopped crying and began to tell me what had transpired that day. She had beeen upstairs sewing, when her younger brother, Ronnie came over. He told her how he was flustered with girls his own age and asked her to introduce him to the ways of the world. She was horrified at his suggestions, but he continued telling her how sexy she was comparing her to the centerfolds in Playboy. She was wearing short, shorts and a halter top, which didn't cover her tits very much. He ran his hand over her ass, asking her to give him his first blow job. She tried to talk him out of this little scenario, telling him she was so much older than him and couldn't bring herself to fuck her little brother. Ronnie laid down on the bed and unzipped his pants and took out his cock. It was already hard and throbbing and about nine and one-half inches long. His prick is about two inches longer than mine and when she saw it she just couldn't resist. She bent over him stroking his cock, and began licking him with her tongue. She took him into her mouth and started to suck, knowing full well he wasn't going to last very long. He started yelling that he had to come and started spurting cum all over her face and tits. He felt badly, but she calmed him down, continuing to stroke his cock, keeping it hard. She tore off her shorts, and sat on top of him, lowering her pussy down on his cock. She was stuffed with more cock than she had ever experienced. She started to rock back and forth until her ass was a blur. It didn't take very long for her climax to hit her full force. She came so hard she almost passed out. When she finally came to her senses and rolled off him, his prick was still rock hard. She couldn't resist and started to lick and suck his cock once again. When he began coming for the second time, she continued to stroke his dick until it ceased to spasm and all his juices were spent. By now as you can imagine, I was in a state of shock. My lovely wife had just confessed that she had fucked and sucked her brother. I was shocked, but not mad as you might expect. In fact I was really aroused. My cock was as stiff as a board. I tried to tell Marilyn that I wasn't mad and everything was going to be alright. She was crying again and didn't believe me. So I took her hand and put it on my hard cock. She was very surprised, but it didn't take her long to figure out that if I was hard, then I must not be very mad. She began stroking my cock, telling me that it would never happen again. All I could do was picture Ronnie stuffing his big prick in his lovely sister's mouth. Marilyn leaned over and took my throbbing prick in her mouth and I came immediately. That was the first time she had taken my cum into her mouth and swallowed it. The next day I stopped at her parent's home after work. I talked to Ronnie and after convincing him I wasn't going to kill him, got his side of the story. The bottom line was that he wasn't satisified and wanted more sex with his sexy sister. I thought it over and decided we could both fuck her at the same time, fulfilling our fantasy of her taking on two men at once and he could get his rocks off again. It seemed like a win-win situation. The next weekend Ronnie stayed over under the pretense of helping me with some carpentering work I'd been putting off. In the evening I told Ronnie we'd go upstairs and I'd set things up with his sister. I told him to listen, and when he heard us begining to have sex, he should come upstairs and join in. Marilyn and I retired early. I began playing with her tits and pussy, getting her aroused. I licked and sucked her nipples while fingering her juicy pussy. I figured she knew something was up, as she was moaning and groaning like a wild woman. When she was ready, I got her up on her hands and knees, and began fingering her pussy, and even sticking a finger in her asshole. She was sobbing for more as I stood up behind her. I thrust my cock into her pussy and began stroking it in and out. I looked up over her head and saw Ronnie, coming towards us, naked as we were, with his big prick sticking out in front of him. I motioned for him to come over, and as he reached us, I tapped Marilyn on her shoulder to let her know we had company. She moaned when she saw her brother's prick bobbing right in front of her face. She grabbed his cock and stuffed it in her mouth in one gulp. I began pounding my cock in her cunt, as Ronnie thrust his prick in and out of his sister's mouth. We shook hands over her back, and I whispered for him not to come in her mouth. However, I was a little late with my instructions, for no sooner were the words out of my mouth, than Ronnie let out a howl and cried out that he was going to shoot his cum. Once again, she took his cum like a trouper, and sucked him down like nobody's business. I was not but a few seconds behind him, letting go with barrels, spasm after hot spasm of my hot cum shooting into my wife's clutching pussy. Then she let loose and came sceaming and thrashing about, like I've never seen her do before. I guess the combination of having two men, one her brother, fucking her at one time was just too much. We all collapsed on the bed, gasping for breath. After a few moments, I heard Marilyn exclaim, "Oh, my God! This sucker is still hard!" I looked down between us to see her grasping Ronnie's hard, throbbing cock in her small hand. "It looks as though we aren't finished yet." She said with a gleam in her eye. I slid underneath her, as she rolled over into a sixty-nine position. "Come on, brother dear", she said with a big smile. "Fuck your horny sister with that big, hard prick of yours." I stuck my tongue between her pussy lips, and began slurping our combined juices. Then when Ronnie stood up behind her, I grabbed his cock and fed him into her cunt. I started to lick her clit, as she began to lick and suck my cock, which was by now hard once again. It was a little wierd licking my wife's clit, while her brother slid his cock in and out, his balls and the underside of his cock bumping my nose. We were all racing hell-bent for election, and I was the first to come. My cum shot up my cock, and into Marilyn's sucking mouth. She swallowed it once again and began to shiver and moan, coming on Ronnie's monster cock. That set him off, as he yelled, pumping his jism deep into her clasping pussy. This time we were done for good, and collasped, sleeping together in a tangle of arms, legs, and sweat. I tried to set up another threesome, but was unsucessful. Marilyn and her brother got together a couple of times, but she just jacked him off and let him play with her tits. Or at least that's what she told me. I tried to get her and her twin sister together to fuck me but her sister chickened out. All that's left now are my memories, which still leave me hot and hard.