The teacher gave a sigh and nodded before walking back to the rest of the class. Erika moved along the edge of the pool until she was closest to the exit and climbed out of the water swiftly, careful to keep her back turned so that nobody could get a glance of what was between her legs. She entered the shower room, her breasts heavy and bouncing with each step while her package pushed harder against the swimsuit.
Once in a stall, she finally looked down. Her breasts were painfully constricted, straining the fabric; all her nipples were showing. Below, a growing erection was poking out of its sheath and creeping up her tummy, the outline clearly visible through the fabric. Erika could feel her balls descended and swelling, squeezed underneath. Cream coloured fur was also overflowing the suit and growing on her inner thighs.
She needed to relieve the urge. Soon the swimming session would be over, her classmates would come rushing to the showers, and she could not risk being discovered. Pumping the white juice out of her canine thing also seemed to be the only way to stop the transformation and revert back to human, so she had to.
Erika massaged her breasts to alleviate the dull pain. Her boner pulsated and she let out a surprised moan as its full length abruptly slid out of its sheath. She wiggled her hips, rubbing her erection inside her swimsuit while she kept both hands on her breasts to play with her nipples. A few bubbles of pre seeped through the fabric.
She pulled down one shoulder strap and grabbed her right breast as it spilled out of the swimsuit. She laid her other hand over the canine phallic shape outlined through the fabric, squeezing it lightly. It sent shivers of pleasure through her body and she moaned sensually, a large knot swelling under her hand. Her balls grew larger and slid out of the suit, hanging close to her body between her legs.
Erika clutched at her right breast and she moved her other hand back to one of her teats below her left breast. She gave a firm tug and her cock throbbed chaotically in reponse, oozing more pre against her belly and through the fabric. Her breathing was shorter, her sighs of pleasure were resonating through the empty shower room.
Bucking her hips forcefully she was grinding her enormous canine penis inside her swimsuit without even using her hands! She could see it contracting through the fabric and leaking abundantly. Her balls tightened against her body and she threw herself against the wall, humping it with abandon as her huge cock blasted its load through the fabric onto the wall's tiles and herself. She had to put a hand over her mouth to keep from screaming in pleasure.
Thick cum was overflowing her suit and spilling out everywhere, her cock tenting and stretching it dangerously as it jerked uncontrollably. She hold it against her body and a new burst of semen exploded between her breasts and onto her face. She hold on to her balls and a third wave of climax hit her, a torrent of cum escaping her body and cascading both inside and outside her swimsuit, dripping loudly onto the floor.
Erika barely had the time to catch her breath; she heard giggles outside of the showers as her classmates were about to enter the room. Panicked, she turned on the cold shower to wash away the cum while she was struggling to shove her balls and breasts back into her suit as quickly as she could. She was able to feel her heartbeat through her cock, which was lazily oozing the last drop of seed against her belly and faintly pulsating.