Pedalling hard on your bike, you crest a dusty hill. A little past the base of the hill, you can see the rotting buildings of a long-abandoned farm. You mean to go straight past it and continue on, but you're shocked to see the reddish-chestnut shape of a horse in the near paddock. The animal is gorgeous, but obviously abandoned- it's been tethered to a post in the paddock, and there's a bare circle of earth around it, where the poor horse grazed as much as it could reach.
When you feel a sudden rush of wetness in your panties, you're not as surprised as you were to see the horse in the first place. You've known about this perversion of yours for a while now, and this is a beautiful creature. Biting your lip, you make a decision. You're the only one for miles, and there obviously isn't anyone coming back for the horse.
You're going to "ride" this beast.
Sweaty all over, you gently pump the handbrakes of your bike as you speed down the hill, meaning to coast to a stop near the rotting fence. As your bike slows, however, you hear a loud POP! and the bike jerks. With a curse, you get off, and realize you've run over a nail, puncturing the front tire of your bike. You're miles into the countryside, on a back road that no vehicle has ever been down. You're tired. The idea of walking home in the sweltering summer heat isn't all that alluring.
And besides, that sexy creature- a stallion, by the balls you can see dangling between his muscular hind legs- is sidling up to the fence as far as he can, straining against the tether to get to you. Your mind is already spinning as your gaze roves across his sleek neck, his velvety lips, his solid chest, and... you're panting as you imagine being fucked by this huge stallion... the sheath on his belly, big even though he's not erect.
Smiling, you drop your bike to the ground and climb over the fence, into the paddock.