In the dimly lit, private clinic, Dr. Phingerphuk's gloved hands expertly navigate the twins' bodies, mapping their sensitive zones. He teases their nipples, tracing circles around them, making them stand erect. His touch lingers on their inner thighs, causing them to squirm. The twins' cocks twitch, leaking pre-cum, as the doctor's fingers dance around their sensitive heads. Dr. Phingerphuk smiles, knowing he's hit the right spots, his own cock straining against his scrubs, eager to administer the final, throbbing dose of his special treatment.