The wife walks in

Phyllis carried the two bags of groceries in from the car. She juggled them deftly to open the front door, and she walked into the kitchen, setting the bags on the counter. She sniffed at the air, detecting an unusual musky smell that she couldn't place. She walked into the living room and gasped at the tableau before her: her husband's naked ass as he knelt in front of a naked woman, sucking on her tits. Not all the data had registered in her brain when she breathed in deeply to shout, "Aaron Michael Davenport! What on Earth are you doing?!"

Aaron stood up, cock waving at half-mast toward her, and said, "Phyllis! I'm so glad you came home. I've got an amazing discovery for you!"

It was then that the woman on the couch differentiated into a creature with four arms, four big naked tits, and short greenish-brown fur. She sucked in another deep breath to scream, but then the pheromones she had been breathing since she walked in the house hit her system hard. Her vision flashed red, her nipples got hard, and her pussy started tingling. She moaned at the suddenness and strength of the reaction.

"My love, I know this will be hard to believe, but Lashu is an ambassador from another planet. They spread peace in the galaxy by having sex with other species. And get this! Lashu is a hermaphrodite with the sex organs of both males and females."

Aaron's wife heard this but was having a hard time concentrating on anything but his semi-firm prick waving before her. "So, you've had sex with this ... um ... being?" She noticed that a drop of cum came off the tip of his manhood, and she licked her lips. She was dying to suck it into her mouth and taste the salty discharge. She wondered at that thought since she usually found blow jobs tedious.

Lashu spoke up this time as they got off the couch. "Yes, he's taught me a lot about humans and their bodies and social mores. And he's a very good performer. You are very lucky to have him. Are you two life-bonded?"

This was the first time Phyllis had a chance to look more closely at the alien. She saw the two rows of breasts and four arms, the hole at their groin seeping what must be her husband's spunk, and the soft fur. Now she was mesmerized by the alien's body, instead of her husband's. The pheromones were working overtime, and her cunt had started to leak. "Why, yes. We are married."

"Say, you should show her your equipment, Lashu. She'll be really impressed," Aaron said to the extraterrestrial.

Lashu stood in front of Phyllis and extended their male appendage. They made it about as wide as Aaron's and around ten inches long. Lashu didn't want to scare the woman. Phyllis' mouth dropped open and her eyes widened in surprise. It was the largest and most beautiful cock she'd ever seen.