"Wow" You think as you watch your cock stand straight up in the air. It slaps against your chest, the head directly under your chin. You see the pre dribbling out of the tight hole. The sight and smell of it intoxicates you. But you pause before stroking yourself, as the nurse is staring at you with a smug smile.
"Well, go on. You wanted it, let's see what it can do." she said. You do feel a bit weird jacking off in front of her, but you can't wait any longer.
You grasp your shaft, the thick skin tingling at your touch. You thrust your hips forward in time with your strokes, humping the air in front of you. You're too big for a human, you'll have to find yourself a mare, or anthro to fuck. You lick your lips at the thought mounting a mare in heat.
More pre slides out of your flared cock head, and you experimentally lick some. It tastes even better than it smells. You keep licking, until you're sucking the head of your dick with such urgency. You've always dreamed about being able to give yourself a blowjob. And now you're doing it.
You run your tongue over and over the rough skin of your cock, and suddenly there's a tight feeling in your balls. Like they're being squeezed. And then you feel something rush up your shaft. Thick, salty cum pours into your mouth, and you greedily suck it down. The taste in incredible. Your hands grip your cock as wave after wave of pleasure rocks your body.
Finally the stream of cum stops, and you slowly remove your mouth from your horsecock. Cum drips all over your body, and you sit there on the table breathing like you've just run a marathon. You cock slowly retreats into the sheath at its base. You can still see the head, clearly defined in the tight skin. You can't believe that entire 2 and a half foot beast can fit in such a small container.
"That was... so much better than I thought it would be." you say aloud. The nurse chuckles, and approaches you. She has this mischievous gleam in her eyes, and you wonder what she had in mind.