McKenzie doesn't even make it.

McKenzie hadn't lied when she had told her class she was heading to the nurse's office. She had every intention of getting there. Unfortunately, her body made a different decision.

Along the way to the office, a fresh wave of agony struck McKenzie right in the gut. The pain nearly sent her to her knees and took away all rational thought. The girl began acting on instincts and barely managed to get herself to the nearby bathroom before the agony became too much to bare.

McKenzie dashed into a stall, yanked down her pants, and plopped onto the toilet seat. For several seconds, she sat there, dazed from the pain. It was only after nearly a minute that she finally began to pay more attention to her lower body. The pain faded slowly, leaving behind a strange, slightly uncomfortable sensation of fullness in its wake. For some reason McKenzie could not explain, she felt like she had something inside of her - something that seemed to get bigger with each passing minute.

Finally, McKenzie looked down at her crotch and when she did, a fresh wave of emotional turmoil replaced the physical agony she had been feeling. What she saw astounded and horrified her.

Her clit had grown again! By now it was well over two inches in length. Even worse than the size increase was the distinct change in shape. The tip of the organ was beginning to bulge in a way that was horribly familiar. Meanwhile, the base of McKenzie's clit had formed a small shaft that was turning pale in contrast to the angry purple of the tip. It was all too clear to McKenzie what her clit was beginning to resemble.

"This can't be possible," the girl whimpered, trying to wrap her head around these changes.

It felt like the world was crashing in on poor McKenzie. Her body was changing in painful and bizarre ways. She was getting weird thoughts and urges. Worst of all, she had practically assaulted poor Annie Myers without even realizing it.

McKenzie's mind flew back to that moment in time. There was a pang of deep shame, but something else as well. McKenzie remembered how soft and supple Annie tit had felt in her hand. How had that girl been so damn flat and dorky only a month earlier? God those titties were amazing. They were nearly as big as Jessie's and much perkier.

A surge of pleasure filled McKenzie's obscenely swollen clitoris, causing her to gasp. She looked down and watched the thing begin pulsate with her heartbeat. As gross as it seemed, her clit seemed to be calling out to her, begging for a touch.

Every rational fiber in McKenzie's being told her not to touch her clit, but her rational brain had worn thin after hours of pain, embarrassment, and confusion. Just a touch couldn't hurt, right?

McKenzie lowered her forefinger to the tip of her clit and gasped as she touched the surface. The pleasure was overwhelming. It tingled and burned and ached in ways that were both agonizing and ecstatic. Before she knew it, McKenzie was rubbing the obscene member with her index finger and thumb, feeling the pleasure build.

As she touched herself, McKenzie pulled out her phone and opened Instagram. She wondered if Annie Myers had an account. McKenzie couldn't stop thinking about the soft, supple feel of Annie's boob. She doubted she would ever be lucky enough to touch that magnificent rack again, but some pictures would be a nice substitute.

McKenzie's distracted searching yielded an account for Annie, but it was mostly just Annie's semi-decent anime drawings. What pictures there were of Annie were all prior to her miraculous growth spurt. McKenzie gaped at the nerdy, acne ridden girl and tried to square her with the buxom goddess she had accidentally fondled in gym class. After a little while, McKenzie got bored and went searching for a much more satisfying account: Jessie's. All the while she stroked her bulging clit, failing to notice as it started to enlarge in her grasp.

McKenzie knew Jessie's account would be a goldmine. Summer was approaching and Jessie had been on a bikini buying spree. Her three recent pictures left nothing to the imagination. God, how had McKenzie not noticed how good her best friend's tits were before? McKenzie's own pair were nothing to sneeze at. They were a perky pair of c-cups that drew a fair amount of attention. Still, she was nothing compared to Jessie.

A new balance of hormones in McKenzie's bloodstream jacked her libido through the roof and twisted her desires, driving her to gawk at her best friend in a way that would have repulsed her before. The urges were so intense and sudden, driving McKenzie to a near frenzy as she rubbed her growing nub. By now, the clit was big enough that it required McKenzie to grip it like a pole.

"Oh God Jessie, how did I miss you all these years? God I want to fuck you. I want to fuck your brains out."

McKenzie stroked herself harder as she fondled her best friend with her imagination. The pain and tightness in her abdomen was back, but the tidal wave of pleasure outweighed it. The teen could feel something building deep within her. She needed something so badly, but she just wasn't quite there yet. Maybe if she kept on touching herself. Maybe if she kept on ogling her best friend. Maybe if she just shoved herself deep inside Jessie's tight folds...

McKenzie's phone erupted with an incoming call, breaking the spell immediately. The girl freaked out as she looked down to find herself gripping a pole of meat nearly five inches in length.

Panicking, McKenzie answered the call and immediately regretted it. It was Jessie. Hearing the girl's sweet voice only made McKenzie burn with greater shame. Poor Jessie had no clue that McKenzie had just been friggin masturbating about her. What's worse, now McKenzie's clit was completely out of control. It was huge and sensitive and disturbingly...male.

"McKenzie, where are you? Coach is freaking out. I'm freaking out. Everyone's freaking out, to be honest. What was that back there?"

"I felt sick. I needed to go to the nurse," McKenzie lied.

"Coach checked in with Nurse Bell. She said she hadn't seen you. You're scaring everyone. Tell me where you are and I'll come find you. I may be able to get you out of detention, but we're running out of time."

McKenzie knew seeing Jessie would be a mistake. After what she had just spent the past several minutes doing, she didn't think she could bare the shame. However, something darker and deeper pushed back against this impulse and before McKenzie could even process what she was doing, she was telling Jessie exactly where to find her. Jessie promised to be there ASAP and hung up the phone, leaving McKenzie to deal with the throbbing monstrosity between her legs alone.

God, it was so big! McKenzie guessed her clit was now bigger than the dicks of some of the guys at her school. It's shape was horribly phallic too. The tip was still smooth and without the characteristic slit of a penis, but McKenzie didn't know how much longer that would hold.

The swelling, aching pain in her abdomen was back too. McKenzie swore she felt filled by something. With great trepidation, she stuck an exploratory finger into her crotch, fully expecting to feel nothing. Instead, she made it about a half an inch in before her finger tip brushed against something fleshy and round.

McKenzie gasped and hoped to God that wasn't what she thought it was.