Over time the thump-thump of music and dancing from aerobics classes below, together with a pernicious water leak into plaster and under-reinforced concrete above, so weakened the floor of the shower cubicle in the men’s changing room that, at the end of a full day of casting for a raunchy new musical, with all the stamping and banging that involved, its floor collapsed and dropped the male occupant of the shower ten feet, naked and suds-covered, to face twelve women in leotards, and the round, be-skirted bottom of their coach, who had her back to him.

One effect of his own workouts in the gym of this jerry-built sports complex had been to improve his reflexes, and he managed to grab both sides of the hole as he fell, so that he hung for a second, arms raised, allowing twelve pairs of eyes to focus approvingly on his long, freshly washed cock, before dropping the remaining two feet to land in a crouch in the plastic shower tray that had preceded him into the dance studio. As he stood his shock faded, and ascertaining that he had landed uninjured, and suddenly aware of his female audience, he protectively placed both hands in front of those wet wobbly bits and paused, watching his watchers, to see what would happen next.

The dancers and their teacher, who had turned around at the disturbance, happened to be in the process of a similar move, so that all occupants of the room stood in a crouch, their arms crossed before them. He shrugged, amused and, being a cheeky sort of chap, stepped jokingly to his right in time to the beat of the music, which took him out of the shower tray and the water cascading from above.

The teacher stepped with him, straight-faced. Her serious expression interested him. Was she being ironic? He couldn’t tell, but while he kept his hands crossed in front of him, she now held hers outstretched. The class followed her step, and he watched their breasts bounce pleasingly as they did so.

Someone above, too quick to be the ancient janitor, had managed to reach the shower tap to turn it off, and he looked up to his left as the cascade reduced to drips. Thirteen women looked up to their right in response. He took another step to his right, the teacher took a step to her left with her arms held out, and the class followed her. This was fun! More moves followed, the steps from him copied by the teacher, his steps and her improvised arm movements in turn copied by the class as the music banged away.

After a few turns both sides began to appreciate the physical characteristics of their counterparts. The girls found him to be tall, dark, lean and well-muscled, with a twinkle in his eye and the confidence to lead. He saw pretty faces, some smiling, some in serious concentration, and lean dancers’ figures. As he looked, their curves drew his eyes and his gaze darted from girl to girl, sliding round a breast to its soft armpit, down to linger in the dip of a slim waist hugged by tight fabric then following the line out over a hip, down a long, long thigh, pausing briefly on a bent knee over a smooth shin to a black, high-heeled shoe, and jumping across to its pair and back up the other long leg.

This was dazzling, there were too many sights to take in! His gaze found and locked on the teacher’s stockinged legs with darker constricting black bands holding them up at the tops of her thighs. Below a light yellow top and bare midriff her very short blue skirt flared around her hips and flew up constantly as she danced. It appeared to have no purpose other than to focus the eye on her pelvic region and the flashes it revealed of same blue coloured panties covering that interesting juncture of her legs.

Some of the girls’ leotards were cut very high at the hips and came down in only a narrow strip – local beauticians clearly did a good trade in bikini waxing. It gave him an idea. He did a move spreading his legs, bending his knees and turning slowly. The teacher copied him, but half-cupped her breasts before running her hands down her hips and behind to her bottom as she pushed her pelvis forwards, the class mimicking her movements.

The results were exciting: lean inner-thighs spread apart, and fabric stretched tightly over pubises whose silhouettes curved down at the joins between every pair of legs. The teacher’s skirt spread wide over her thighs and rose up like a curtain, displaying what was in fact a tiny blue thong, framed by her sheer black stockings and the definition of muscles and stretched tendons that led symmetrically to her join. She had to be clean shaven. He could see the bones of her pelvis and intriguing hints of a central crease in that puffy mound between her legs.

Another girl with a black ponytail and bright red lipstick was even more revealing. Her pink leotard stretched tight over the huge bar of her bosom, allowing him to see the lines of her undergarment, and the points of her nipples. This much was quite a sight, but between her legs the fabric was strained to translucency. he could clearly see her pussy. And she could see that he could see. Was she becoming aroused? A crinkled curtain of inner lips appeared to grow from within, pushing apart the lips that protected it. He gaped – unable to believe what he was watching.

This was too stimulating too ignore, and risking the class’s wrath for a better look, he brought his feet together and made two hip-turning steps towards them, they confidently and sexily stepping towards him, before he dropped down, feet apart, right in front of the teacher.

Teacher spread her knees wide just for him. He could distinctly see the camel-toe outline of vulval lips behind the thin material of her thong. Again she cupped her breasts, but this time she squeezed them whilst looking straight at him. He felt his cock give a jerk and start to thicken behind his hands. She moved her hands down over her hips and crossed then in front of her pelvis, framed the area with her fingers, and pressed against her inner thighs. As she pressed in she pulled her hands apart so that he was able to get an impression of that central crease getting wider. He now had difficulty keeping his rapidly hardening cock behind his hands. But to make his difficulty worse she stood up, turned around and bent over to touch her toes, presenting him with her lovely rear. Her skirt didn’t begin to cover the peachy cheeks and the dark valley between, with its thin strip of blue running down like a river through a canyon. Her head and torso hung down between the A-frame of her legs, and her mouth was open as she looked back at him, upside down, long blond hair pooled on the floor. Apparently the thong needed adjusting because one hand reached up and caught the tight string just under the Y at the top, and slid down pulling it out of the ditch in which it had become stuck. She was quick but he had just a glimpse of her tiny anus before she was done.