Tommy watched with aching adoration as the taut, luscious globes of Julia's ass swayed by in her skin-tight yoga pants. The pants were nearly translucent. The two were classmates in nursing school, and members of the same commercial gym nearby. Tommy would occasionally glance self-consciously through the glass doors where Julia participated in yoga sessions. Downward facing dog created such a heart-wrenching sight of supple female thigh, cleft, and ass that he felt dazed for hours each time he witnessed it.
Julia was a gorgeous, willowy five feet and eleven inches with green-blue eyes and unbelievable locks of curly, auburn hair. Her hair was a veritable mane, and those eyes always seemed full of mischief and snarky knowledge.
Today, Tommy was overcome as he saw the show through the glass of the yoga studio. On the treadmill, he felt his cock swell unprecedentedly, threatening to betray his fixation while still at exercise. He slipped discreetly into one of the single-person restrooms and pulled the door shut. He stripped his shorts to his ankles, perched on the porcelain throne, threw his head back, and proceeded to wank at a manic pace, Julia's prone, nubile body gleaming in his mind's eye.
His reverie was broken, suddenly and ineluctably, as the unisex door swung open. Julia stood there, eyes widening as she beheld his naked manhood. There was no chance of denial. Tommy gaped at her, expecting a deflation downstairs. To the contrary, his shaft swelled even wider and tighter with need.
To his enduring astonishment, Julia smirked, stepping into the bathroom and rotating the deadbolt latch closed. "Door handle's broken, silly. Whatcha doin' in here? Thinking about anything in particular? Anyone?" She arched a single crimson eyebrow skyward.
Tom's Adam's apple bobbed furiously. His eyes swept over the vision in front of him, head to foot, every inch of her taut and perfect. Her sports bra swept her D cup breasts enticingly up, and displayed the Amazonian line of her deltoids and collarbone. Her waist narrowed aggressively, tapering with her flat, exposed midriff to a sweeping set of hips. Tommy was mesmerized. A glistening, fine sheen of sweat coated Julia's exposed skin. He felt his mouth begin to water.
Incredibly, his hand seemed to be starting up again, sliding the sheath of skin up and down his erection. Julia laughed aloud.
"Oh no you don't! Hands off, mister." Tommy froze, glancing self-consciously from his swollen head to Julia's heaving breasts, up to her eyes, and down again. He stuttered, hoping his brain would offer up some last ditch excuse. There was nothing.
Julia's eyes narrowed even as she grinned. "I saw you, you know. Staring from behind me. Right at me. There's a mirror at the front of the yoga class. I wasn't sure at first, but a lady knows after three consecutive sessions with the same boy looking at the same place. Like I said, see anything you like?" She stretched languidly, arching her back and pushing the swell of her breasts upwards and outwards. Tommy stared, nonplussed.
"I'm definitely not going to stand here and watch you masturbate your little penis. I'm a nurse in training. I'm going to use this as an opportunity, hands on practical exam. Urology, DRE, refractory index. I'll give you some visual stimulus to prep. That's a perk, for being my little Guinea piggy."
With that, she put her left hand into the waistband of her yoga pants, pulling down the elastic and baring a single, curving, lightly freckled hip. A rich purple thong ran across the hip, disappearing in front and behind. Tommy's dick swelled further.