As Mark stepped into Natalia Kapretti's dimly lit clinic, his heart raced with anticipation. This was his third appointment with the mysterious doctor, and each visit had been more intense than the last. He followed her instructions and lay down on the comfortable couch, wondering what she had planned for him today.
"Good afternoon, Mark," Dr. Kapretti said as she closed the room's door behind her. "I'm going to perform a thorough check-up on your anal region today." Her voice was soft and reassuring, but there was an undercurrent of dominance that sent shivers down Mark's spine.
She moved closer, her sharp eyes inspecting his body. "Everything appears to be in top condition," she purred, running her gloved fingers over his skin. "But let's focus on this beautiful derriere of yours."
Mark gulped as she sank to her knees and began exploring his anus with her gloved hands. It felt strange yet incredibly arousing, and he couldn't help but moan softly. He felt a slight pressure, and then she was pushing something inside him. It was her fist, and she plunged it deeper and deeper into his tight ass.
"Ahhh, yes," she breathed. "This is what I've been waiting for. Your prostate needs some loving attention today." Her other hand massaged his balls, and soon he felt a familiar warmth building within him. Before he knew it, he was cumming hard on her glove.
"There, there," she cooed, pulling her fist out of him and wiping it clean with a towel. "That was simply divine." She stood up, her gaze boring into him. "Now, for the fun part. You'll be wearing these lovely panties until our next session. They're just the right size to contain all that smelly shit you've been holding onto."
Mark's heart raced as he felt the warm, damp fabric press against his rear. It was like walking around with a dirty secret - a secret that only he and Natalia Kapretti shared. He thanked her with a shaky breath and left her office, already anticipating what she would have in store for him next time.