As soon as Emily arrived at school, she rushed to find Erika, who was waiting in front of the classroom. Erika only noticed Emily at the last second, when a flash of short auburn hair jumped to her neck in an over-enthusiastic display.
"Erika! I need your help!" Emily whined softly in her ear as she pressed her short body against her friend. A growing clitoris hardened in Emily's panties and bumped against Erika's thigh.
Erika squirmed uncomfortably from Emily's miscalculated hug; neither were quite used to their new chest sizes yet, which got squeezed between them painfully. Moreover, she could feel Emily's moist panties and a hard nub poking her.
"Wow Emily! Calm down, everybody could be looking at us..." Erika whispered, pushing back gently. "What is it?"
"Erika... I think it's coming back. The thing between my leg," Emily said softly, "you have to make it go away! I don't want to touch it."
She seemed on the verge of crying, her big grey eyes filled with fear.
"It's okay Emily... I'll help you, but we don't have time right now! The class will start soon. We'll go to the bathroom at lunchtime."
Emily's freckled face looked a little red and feverish. "L-lunch?"
Erika sighed. "Yeah, you need to be patient and wait a little. Try to think about something else, it'll calm down."
Emily looked down, embarassed. She was about to say something when everybody including Erika started entering the classroom, so she followed. The two friends took their usual seats and stayed quiet as the teacher started the lesson for the day.
At first, Emily couldn't concentrate. Being in Erika's arms had accelerated the changes in her panties, and she froze with horror as her happy button grew over an inch and thickened, soon joined by two small orbs that filled the remaining space in her white panties. Of course her package was too small to be noticeable with her skirt, but she felt naked and as though everybody in the class could tell she wasn't normal.
After an hour however, she had calmed down and got used to the squishy things between her legs. They were actually less distracting when she was calm than her breasts, which had grown from AA cups before the weekend to almost C. While it would not draw attention on most girls, on her small frame it definitively changed her shape and balance. Moreover she didn't know whether to have them under the rim of the desk, which she would regularly ram her nipples into, or over the desk, where the bra-less orbs would spill and sometimes be in the way of her writing.
As the hours passed Emily was finally finding a comfortable position, but also noticed the restlessness in her body returning. She was just casually glancing at Erika's notes and thinking about her friend, when she noticed the warmth radiating from her nub.
She tried adjusting her position, sitting differently, but all the squirming only made it worse; the thing between her legs felt as though it was leaking. Emily took a slow inspiration, trying to think of something else. This time though she could not keep control over her body. Her one-incher slowly hardened again and began pushing upward against the fabric of her panties.
"Mrs Emily Beaumont! What is keeping you from listening today?" a severe teached asked aloud, making Emily freeze again. "At your age you should have learned to go to the bathroom before or after your classes, but it looks like you can't sit still. Do you need to go?"
Emily turned red as a beet. Erika raised her hand.
"I can take Emily to the bathroom if she's too anxious to go alone."
The teacher rolled her eyes, but did not argue. "Fine, be quick you two! And don't make this a habit."
The two friends stood up and exited the classroom, Emily following Erika like a shadow. As they walked down the main hallway, Emily's panties were painfully stretching over her growing erection, and when she looked down she saw her skirt sway a little over a small bulge. She pressed a hand over it to flatten the area and immediately let go as it sent a shiver of pleasure and pain through her guts. Emily let out a tiny squeal and stopped in the middle of the corridor.
"W-wait, Erika!" she whined.
"We're not there yet, Emily!" Erika said as she turned around. Then she saw her short friend, who was slightly trembling and looking down at her skirt, or rather the little wet spot that crowned the bump between her legs.