Bursting into the bathroom, Ms. Hunsaker turned on the light. Robbie backed instinctively away from the door as a blade of light pierced the darkened closet, then moved slowly back to the crack and put his eye to it.

Ms. Hunsaker turned around and locked the door behind her. Robbie held his breath. Did she know he was here? He tensed. If she came to the closet, he was going to just put his head down and run through her. Maybe he could get out without her identifying him.

But she didn't come to the closet, just leaned against the bathroom door with her hand over her heart. Robbie noticed that she was breathing heavily and her face was flushed. Her lips were moving, although Robbie couldn't hear what she was saying. She was wearing the same clothes that he'd seen her wear in class a hundred times before: a severe turtleneck, a floor-length skirt.

With trembling fingers, Ms. Hunsaker brought her hand to her head and began pulling pins out of her tight bun. She placed each pin firmly on the counter as she pulled it out. Freed from its bun, her wavy red hair reached down to her waist. She ran her fingers through it and shook her head, sending it rippling.

Her hair free, she reached behind her and unzipped her skirt. Robbie stared in stunned silence. Ms. Hunsaker was undressing in front of him. The boys would never believe this. He willed himself to look away. This wasn't something he wanted to see. But no matter what he told himself, he stayed there, peering out through the crack in the closet door.

Ms. Hunsaker stepped out of her skirt. Now she was only wearing her turtleneck, black satin panties, and a pair of knee-high leather boots. Robbie was surprised to see that her legs were actually shapely and attractive. He'd always assumed that she wore such severe clothes to hide some hideousness beneath. But no, her legs were firm and large and white, and the skin was undimpled and clear.

Now she took off her turtleneck, peeling it slowly over her head. Her body was round and large. Were her breasts really that big? How had Robbie never noticed that? A golden heart pendant nestled in the deep valley between her ponderous white breasts, which were supported by a lacy black bra. Robbie had never thought about her in lace, or in black underwear. He was suddenly struck by the thought that Ms. Hunsaker might always wear underwear like this under her clothing. As he stared at her, he thought of her teaching class looking like this under her clothes.

Ms. Hunsaker had always looked sturdy, but Robbie had never realized how much her clothing hid her curves. Everything about her was large, and Robbie noticed with a shock how much he liked that. She had big hips, sturdy thighs and heavy breasts, and her belly had a pleasing curve to it. The skin of her belly was entirely smooth, except where it was punctuated by the deep hole of her navel. Robbie had never seen anyone quite like her. She looked so different from the light, airy girls his age. No, she was a woman.

Now she reached down to unzip her boots, and as she did so, the locket dangled free, and her breasts strained at their support. She stepped slowly out of one boot, then the other. The skin of her feet was an even, uncalloused pink. Her nails were neatly trimmed, but unpainted.

Robbie watched, enthralled, as she reached both hands behind her back, fumbling with her bra. His heart was pounding in his chest. Each beat felt like it shook his whole body, and he could scarcely believe that she didn't hear it.

There was a sudden give as Ms. Hunsaker's bra came undone. She let the cups slowly fall away from her, then tossed the bra aside. It hit the wall near the closet with a sharp smack, and Robbie jumped. Her breasts were large and heavy. The skin was perfectly white and so transparent that Robbie could even see light blue veins beneath it, like rivers on a map in a history textbook. She had big, soft-looking nipples with wide, pink areolas.

She sighed, moving her shoulders around, clearly enjoying being free of the constricting bra. Robbie watched as her every movement set her breasts gently swinging. Once she finished stretching, she began to massage them. She held them in her arms, cupped her hands under them. When she ran her fingers gently over the nipples, it felt as though an electric current passed through Robbie, and he felt his hair stand on end. He held his breath as he watched her fingers moving, gently stroking the soft pink skin which now began to respond, to grow grew stiff and pointed.

Ms. Hunsaker reached behind her neck now to undo her necklace, and as she did so, her breasts lifted with the motion. There was the sound of a catch being undone. The gold chain of the locket slithered over her breasts as the locket fell to the floor.

Now she wore nothing but a pair of panties. They were tight and small, and the triangle of black stood out in sharp contrast to the white of her skin. She took her hands and placed them on her chest, then ran them slowly downward over her body, stroking her breasts, then her stomach and hips. When she reached her panties, she paused for just a moment, stroking one finger lightly down the very center of the black satin. She smiled and sighed, then slipped the panties off and kicked them away. The panties hit the door of the closet and fell to the floor. Robbie slowly sat down on the ground, still seeing in his mind's eye the glance he'd gotten as she'd kicked her leg up: the patch of curly red hair, the long dark slit, and the half-seen glimpse of the space and folds between.

Robbie was hard, and he could feel his boxers growing wet. He watched, breathing shallowly, as Ms. Hunsaker walked slowly toward the shower. She pulled open the glass door and stepped inside. The tile of the shower floor must have been cold because as she touched it, her nipples tightened further. But despite the cold, she didn't shiver, instead remaining perfectly still. The shower was filled with bottles of shampoo, and she looked at them appraisingly before selecting one. She poured a generous handful from one of the bottles into her hand, then applied it between her legs.

Robbie bit his lip. It wasn't shampoo. It was lube.