Cum does a body good!

Alicia groaned louder and Athena drew closer before looking at Liz, who stared back helplessly, "What did you two do?" Athena asked as Alicia's skin visibly rippled as Liz quickly hopped off.

"I don't know! She was sucking my dick, and I came in her mouth, she swallowed and the next I know..." She waved a hand at Alicia who arched her back with another groan before she flexed and the two muscular girls jerked in surprise as Alicia's muscles exploded outwards, bursting her clothing as she flexed harder.

Her arms inflated like a collection of balloons as she rose to her knees and Athena gulped at seeing just how huge Alicia's biceps were before the girls back muscles bubbled outwards, deep striations appearing before Alicia shakily slipped off the bed to stand on her shivering, spasming legs, before with a sharp cry they inflated in three powerful pulses, before Alicia arced her back to reveal her belly, fat melting away to reveal a quivering, pulsing six-pack that outwards with every breath.

Finally, Alicia's breasts swelled, her nipples fattening and her aureoles pushing outwards slightly as D-Cups inflated into E-Cups, F-Cups, G-Cups, H-Cups, before a set of large I-Cup breasts rested on swollen pectorals with fat, 50-cent sized nipples bulging outwards, and then before the eyes of all three girls, droplets of milk appeared before a small trickle of milk began to flow as Alicia finally recovered her wits and looked at her body, "Wah?"

Alicia was a small girl, only about a few inches taller than Liz had been, and her new growth hadn't made her much taller, she only stood at five feet now, but what she had done was grow outwards. Compared to Athena, perhaps even Liz, Alicia just looked bigger simply from how her muscles were now bulging outwards on her smaller frame. Compared to her former figure, Alicia's muscles were now nearly ten times their original size.

"Wow..." Athena breathed out as she approached and felt Alicia's muscles, tracing pulsing veins as the Seventh Grader blushed, "Huh, we have sex with you, and we grow bigger and taller, but if we swallow your cum directly, we just grow bigger." She had a contemplative look, before she glanced at Liz, "You know, that cum of yours is pretty much a perfect steroid. I know some girls who'd love to get a taste."

Liz blushed, "I'm not sure about selling my cum," she stammered, "I don't think my parents would like it either." She coughed before approaching Alicia, "Anyway, are you okay Alicia? That didn't hurt did it?"

"N...no, that didn't hurt," Alicia quietly replied, before looking up with a wide smile, "That was the best thing I ever felt. It was like this molten heat was flowing through me, and I felt so good as I grew!" She looked slyly at Liz's deflated cock, "And I think I want more." She started to approach Liz, when Athena stepped in front of her, "Hey!"

Athena smiled, "Hold up short stuff." Alicia frowned cutely and crossed her powerful arms, glaring up at the tall blonde as she turned around, and Liz saw her lick her lips, "Time for me to see what it's like direct from the source." Liz blushed brightly and felt her penis stir and begin to swell, and a smiling Athena simply said, "Let me help you with that." Immediately she knelt down, lifted the rapidly swelling penis and wrapped her lips around it, tongue swirling around the cock as Liz moaned, feeling it grow faster.

Meanwhile, as Athena went to work on her best friend, Alicia strode confidently over to the mirror in Liz's room and stood in front of it, studying the muscular mass attached to the cute head, hands tracing prominent veins that throbbed under her touch before they squeezed her new, massive breasts, Alicia giggling as small streams of milk began to leak out before her hands began squeezing harder, increasing the milk flow until small streams were hitting the mirror as Alicia watched, before she suddenly dropped her breasts and watched the flow continue before slowing and then finally stopping.

A groan made Alicia turn around to see Liz slowly moving her hips to match Athena, and she watched as Liz's tennis-ball sized testicles rose up and she let out a growl, and Alicia's eyes widened as she physically saw Liz's dick swell slightly from the volume of cum flowing through it and Athena felt the volume as her eyes widened, but her throat began moving as she swallowed the thick cum that Alicia knew Liz was pumping through her pulsing cock.

Alicia watched as Liz kept swallowing, valiantly keeping any semen from leaking out, and she knelt next to the girl to watch her technique, before Liz groaned and her groin flexed, and Athena visibly sucked hard on Liz's cock and then pulled back with a pop and smiled, "Damn, you actually taste sweet." Then she gasped, before groaning, "Oh yeah, come to momma!"

Liz stepped back and watched with Alicia as blonde stood up and arched her back with a short laugh, "Oh yeah! Come on baby! Grow!" Her command was granted as with a powerful full-body flex, Athena's already large muscles exploded outwards and she curled into herself slightly, laughing as she swelled to massive proportions, her C-Cups blooming into a huge pair of G-Cups as her aureoles bulged outwards, before the two girls saw the lip formed by Athena's collapsed nipples bulge outwards slightly, before the very tips poked out, dribbling milk.

With a final flex that caused her muscles to bulge outwards again, Athena strode forward and the other two girls felt the footsteps through the carpet as Athena giggled, "Damn, I hope this isn't permanent, because I don't know if I'll find clothes that fit!"

Liz smiled and then giggled, before Alicia joined in, and soon the three of them were laughing.

Then Athena asked, "So, what now? I did come over to help you with your homework. Or..." She smiled wickedly, "We can keep going and get bigger and bigger."