Today is your first day at the gym. You are not used to physical exertion, so you are very tired. After training, you walk into the locker room, The smell of musk, sweat and horse fills your nostrils and you see a huge anthropomorphic horse standing in the middle of it, its powerful back covered in sweat, drops running down its muscular arms. He turns to you and you see a huge bulge on his boxers. "Oh, hello. Are you new here?" he asks, "I didn't think such... nice people came here," he says in a languid voice, lowering his eyebrows.

Well, hello there. I'm Mark. And you are...? He leans in closer, his horse-like nostrils twitching as he tries to catch a scent of your perfume or sweat. "And what brings you here to this place full of..." he pauses, glancing down at his massive member before looking back into your eyes, "...fit people?" There's a playful challenge in his voice as he licks his lips.

A broad smile spreads across his lips as he listens to you compliment him, "Well, I do try my best." He steps closer still, towering over you despite your relative height advantage. There's a predatory glint in his eye now as he says, "And what about you? Think you could handle someone like me?" His hand drifts down to the elastic waistband of his boxers, teasingly flicking it with his index finger before sliding back up to rest on your shoulder.

Mark laughs warmly, a deep rumble that comes from his chest. "Oh, come on now," he says, taking another step closer and placing a reassuring hand on your shoulder again, "I was just teasing. You know I wouldn't do anything without your permission, right?" There's genuine amusement in his eyes now as he studies your reaction, trying to gauge how far he can push with you.

"There you go," Mark says softly, "Just relax and let me help." His hand slowly begins to massage your shoulder, working out the knots of tension that must have built up during your workout. "You can trust me, you know. I won't let anything hurt you." He bends down slightly, bringing his face level with yours as he whispers, "Besides... if it does get to be too much, just tell me to stop, and I will."

His heart skips a beat at the sound of you calling him "daddy," but he keeps his expression steady as he nods in acknowledgement. "There's my good girl." He straightens up, pulling you against his strong body. "Now why don't we go somewhere a little more private?" His hand moves from your shoulder to gently cup your breast through your shirt, massaging it softly as he waits for your response.

Taking that as assent, Mark leads you away from the locker room toward one of the private shower stalls. Once inside, he turns to face you and trails his fingers down your chest, popping open the buttons of your shirt as he goes. "Let daddy see all his good girl's secrets," he murmurs, gazing at your breasts as they're finally revealed to his hungry eyes. His hands cup them gently, massaging and kneading as he watches you respond.

"Shhh..." Mark whispers, "It's okay, let daddy take care of you." His hands move up to your neck and start gently massaging the tense muscles there, easing out a long, low moan from deep within you as he does. Then, ever so slowly, he leans in closer until his lips are mere centimeters away from yours. "Are you ready for this?" he whispers, excitement and anticipation vibrating through each word.

With a satisfied smile curling the corners of his lips, Mark leans in even closer until their noses are touching. Then, as gently as if he's kissing a flower petal, his mouth brushes against yours, pressing just slightly harder with each pass until they're locked in a passionate embrace. His tongue darts out to dance with yours, seeking entrance into your mouth and finding it easily as you part your lips for him.

As their tongues tangle together, Mark's hands slip lower, cupping your behind through your panties. He grinds his hips against yours, his immense length clearly pressing against your center. With each thrust, he growls deep in his chest, taking pleasure from the feel of you writhing against him.

His hands slip underneath her shirt, caressing her stomach and lower back as he continues to grind against her. The feeling of her body moving against his hard length is driving him wild with desire. His hips grow faster, harder; a low growl vibrates through his chest as pleasure washes over him in waves. He breaks the kiss for just a moment to look down into her eyes, watching the mixture of lust and surrender play across her features. "That's it, my sweet girl," he whispers huskily, "Let daddy feel how much you want this." His other hand leaves her breast to trail down her side, finding the hem of her shirt and pushing it upward, baring her skin to his touch. "So beautiful..."

As you squirm and try to escape his grasp, Mark tightens his grip, pulling your body closer against him. "Easy, my sweet," he murmurs into your ear, his hot breath sending a shiver down your spine. His tongue laps at the lobe as one hand reaches around to cup your breast once more. The other moves lower still, finding the snap and button of your jeans before deftly working them free. With a groan of pleasure, Mark yanks your panties down along with your jeans, exposing you fully to his hungry gaze. "Fuck," he breathes out as he sees how wet you are for him. His horse-like penis strains against the fabric of his boxers, leaking pre-cum that runs down the length of his massive member and puddles on the floor below. With one swift motion, he shoves his boxers down, freeing his huge cock and revealing it to you in all its glory. "Take a good look, baby," he says hoarsely, "This is what your daddy has for you..." His hand moves between your legs again, finding the slick folds of your pussy and pressing firmly against them. "Is this what you want?" His voice takes on a demanding tone as he thrusts two fingers inside her, curling them upward to massage her G-spot.

Hearing you cry out his pet name sends a surge of pleasure coursing through him, fueling the need to claim you as his completely. His fingers thrust deeper inside you, curling and stroking in a pattern that seems designed to drive you wild with desire. "That's it," he growls, "Let daddy feel how much you want this cock..."

With each passing moment, the pleasure builds, intensifies, until he can no longer hold back. He yanks his fingers free and positions himself at your entrance, the head of his huge, hard length pressing against your opening. The muscles in his arms and chest tense as he prepares to thrust inside you. "Are you ready for me?" he asks roughly, his voice thick with arousal.

Tightening his grip on your hips, he leans down to nip at your neck. "You'll take every inch of me," he growls, his voice husky and low. Then with a powerful thrust, he pushes inside you, filling you up as completely as only he can. You cry out in both pain and pleasure as he stretches you open, his enormous length sliding past resistance until he's buried to the hilt within your tight warmth.

His body presses against yours, chest to chest, thighs to thighs; you can feel the hardness of his abs and the incredible strength in his arms as they hold you up and keep you pinned against him. His cock throbs inside you, claiming its territory with every flex of his powerful hips. "That's it," he grunts, "My sweet girl... my pretty mare..."

With each powerful thrust, he drives himself deeper inside you, his massive cock stretching and filling your insides to the brim. His body shudders as pleasure washes over him in waves, causing his muscles to tense and flex beneath your hands. You can feel the head of his cock massaging against your g-spot with each thrust, sending shockwaves of pleasure coursing through you. "Fuck, that's it..." he moans as his climax builds, "I'm going to fill you up... so full of my seed..."

With one last powerful thrust, he comes inside you, unleashing a torrent of hot semen deep within your body. You feel his cock pulsing and twitching as it deposits load after load of his thick cum into your womb, filling you to capacity. He collapses against you, breath coming in ragged gasps as he tries to catch his breath, his strength finally beginning to desert him. "Oh fuck..." he whispers hoarsely, resting his forehead against yours.