An Extraterrestrial Encounter (NSFW)

A husband and wife were celebrating their 25th wedding anniversary at home on their farm in the middle of nowhere. They were a happy couple, enjoying each other's company when suddenly a bright light flooded their bedroom. The winds picked up and howled, rattling the windows. A low, resonant hum echoed in their bones.

"M-Mitch," the wife stammered, pulling the covers around her. "Why don't you go on and see what all the commotion is?"

"Alright, Elle-May," he replied, rising and slipping into his boxers. "You just sit tight."

As her husband left the room, the wife bundled the bed sheets around her more tightly and followed despite her husband's warning. As they came to stand in the field, they spied a large, alien vessel hovering mere feet above the earth. Two humanoid shapes were standing in front of it.
They were mostly human, though their skin shone oddly in the pale flood lights and their eyes were dark as pitch. One stepped forward, it's arms raised in a gentle, peaceful demonstration. "We come in peace," it said, it's voice deep and it's English near perfect. "We have been studying your planet for some time and have come down with a singular proposition for you. My mate and I were interested to know if you would enjoy trading partners for the activity you know as sex."

Startled, but seeing they meant them no physical harm, the humans agrees to the trade. The silent alien stepped forward and took Elle-May by the hands and gently turned her around. The wife looked back to her husband as the alien approached him, and sighed feebly as they joined hands and walked back inside the house. She soon felt a strong hand on her shoulder, and wih a weak smile, she was guided into the spacecraft.

The male alien undressed and the human stifled a laugh. She gasped at her rude behavior, the confusion apparent on the males face. "I'm sorry, sir. It's just... Your 'equipment is just so..."

"Ah, I see the problem. This is merely for convenience. You see, our race endeavors in a great many conquests and are equipped differently. Here," he signaled her to wait and then tugged at his earlobe. With one tug, his penis was suddenly as long as a pencil, but just as thin. Seeing the woman was not yet impressed, he tugged once more. This time, it was about the size of her husband's. Feeling a little greedy, she shrugged and the alien tugged once more. His penis grew yet again and the woman was beside herself with lust. Seeing he was spot on, now, they enjoyed their time together with gentle, passionate lovemaking.

After they were through, the mixed couples met back on the lawn. The aliens thanked them for their time and were soon up, up and away, disappearing into the night sky.

"Well, that's was certainly an... Experience." Elle-May stated, still a bit winded with a blush on her cheeks. "How about for you, sweetie?"

The husband smiled, but brushed a hand through his salt-and-pepper hair. "It was... Nice." He shrugged, still looking a bit bewildered. "Once the sex started, she was... Well, out of this world. But before that, she kept tugging on my ears..."