Meg sat on the bed next to Erika and removed her shirt to spread the salve over her chest. Soon a warmth ran through her nipples and they turned a darker shade, tingling sensibly.
"Is that all...?" she thought, but she felt a jolt of pleasure and her areolas puffed up, visibly enlarged, and her breasts along with them, nipples erect. She let go of the salve, which fell between her legs as she cupped both sides with her small hands, letting the flesh fill the space with a slight moan. It felt incredibly good! Meg's breasts pushed forward again, growing from a mere A cup to a full B before slowing down. A big change, but something she hoped she could conceal to not get too many questions... but could she? They still looked a little big on her slender frame.
She squished them gently to assertain, squirming, and stronger jolt of arousal hit her, making her almost jump in surprise. Her thighs unvoluntarily pressed against the salve sitting there, and the nozzle sprayed her groin copiously.
"No!" Meg whimpered, pushing the salve away. But it was too late. She felt a sharp pain in her insides and doubled over, both hands clenching against the bed cover. As she was on all four, all too aware of the new weight of her breasts jiggling under her, Meg's whole body began trembling and a strong tingling ran through her crotch area, which began pushing in her panties. "Not this!" she swore under her breath.
Her underwear began to feel extremely tight, as the pressure kept building inside. Before she could do anything, she felt something creep outside of her panties and poke against her skirt. Was that... a penis? As she looked down, a plump package filled the remaining space in her underwear, pushing further her growing penis against her loose skirt. Meg slipped a hand between her legs to push it back, and her own touch made her whimper as the penis throbbed. Sitting back on the bed she pushed the skirt to look.
She was big. Larger than Erika. And getting more and more aroused by the minute. The penis bobbed on its own, swelling and lifting itself as it became very hard and hot. The feeling was amazing and overcoming Meg's sense of fear in the moment. She wrapped one hand around her girth, then another, and began pumping. She could tell the pleasure was building up quickly inside her. New sensations were running through her body and she found herself unable to stop.
Soon, beads of fluids started leaking from the tip of her dick, which made her length all the more slippery and pleasant to rub. Meg started moaning audibly, her hands struggling with the wild throbbing of her new toy. More and more fluids escaped from her cock; the sight of her arousal under her perky breasts was about to tip her off the edge.
Then she heard Erika's voice: "Why.. what are you doing?" her friend said sleepily as she pushed on her elbows to prop herself. The sounds and movement finally pulled Erika out of her nap.