A mysteriously erotic fantasy

"You find yourself walking in a misty forest, Allison," you tell her. "You don't know how you got here, but you aren't afraid. Just curious. You're barefoot, wearing nothing but a white silk nightgown, but you're comfortable. The mossy ground is soft beneath your feet as you wander, aimlessly. It's so pretty here. So peaceful."

"So peaceful..." She agrees.

"You hear the gentle whinny of a horse and walk towards the sound," you tell her, stroking her hair. "But as you approach, you see it isn't a horse. It's a white unicorn, it's horn glimmering in a patch of sunlight as it grazes in a clearing. It looks up at you as you step from between the trees. You give the magical creature a friendly smile."

She smiles in her ****-addled trance. You place a finger on her bare left nipple and circle it slowly.

"You look down and notice the unicorn's penis is as long and hard as his horn," you tell her. "You blush furiously but you can't look away. It's so big and magical!"

"So big!" She exclaims and blushes from cheeks to tits.

"The unicorn whinnys more emphatically and rears up on its hind legs, showing off its rampant member," you say. "Then he slowly but determinely walks toward you, sunlight reflecting off his horn. He gets closer and closer to you as your heart beats faster and faster."

Allison quivers and make a meeting sound there on her couch. A trickle of moisture dribbles out between her thighs. You hadn't even told her she was horny yet. This is going to work out very well!

The only question is whether to have her mount up or kneel down...