Author's Note: Please note that this story contains a few gross bathroom scenes. It picks up immediately where Part 2 left off, although new readers should be fine.
*****
My name's Emily. In most ways, I'm an ordinary Biology student. I go to a small college in New York, near the Canadian border.
A few months ago, my life was perfectly normal.
And then my best friend Roweena stole an experimental dick-plant, which was full of strange cum. We decided to play with it. Soon, I found myself having one bizarre experience after another. One time, I had a one-day pregnancy and gave birth to slugs. Another time, I briefly acquired a green penis. You get the idea.
I've always been anxious about my classwork. Last week, during one of my freakish adventures, I'd completely skipped Biology class for a few days. I visited my professor, Dr. Vilsark, to ask about the material I'd missed.
Then my life got weird again.
* * *
"Lock the door, Emily."
My Biology professor watched me from behind her desk. The two of us were alone in her tiny faculty office, with a small dick-plant on the windowsill.
Nervously, I turned and locked the office door. When I looked back, I saw that Dr. Vilsark was unbuttoning her blouse.
"Dr. V?" I asked quietly.
"I'm not an idiot, you know," she said, looking down. She was undoing one button after another. "One of Dr. Willow's plants got stolen. Immediately, you started missing class..."
"Uh." I blushed. "I don't know what you're implying -"
"I'm working on my own experiments now," she said, ignoring me. "They're very private, of course. But you've seen one secret project already, so..."
Dr. Vilsark opened her blouse, revealing a nursing bra.
"Dr. V!" I gasped. I spun away, embarrassed.
"Don't be shy, Emily," I heard her say. A note of excitement crept into her voice. "Actually, I think you'll find my research very interesting!"
Dr. Vilsark was an elegant 40-something woman with short, greying black hair. Despite the raunchy jokes she made in class, she was obviously a brilliant scientist and teacher. She spoke often about her stay-at-home husband and three kids. One day, I wanted to be just like her.
A pale, green light suddenly filled the room.
As I turned back around slowly, I saw that Dr. Vilsark had exposed her left breast. Immediately, my eyes widened.
"What the...?"
My professor's breast was bright green. A network of veins pulsated beneath her skin, giving off an unnatural light. She stood up from behind her desk, blouse hanging open, with her hands on her hips.
"How...?" I stammered.
Dr. V smiled, amused by my reaction. "This was an unexpected result," she explained.
I blinked in amazement. Her breast looked heavy, with a prominent nipple that glowed like a small, green lightbulb. It throbbed visibly with her heartbeat.
"How did this happen?" I managed to ask.
She shrugged, unembarrassed, and walked around her desk towards me. Her exposed breast bounced inside the nursing bra, casting odd shadows on the wall.
"I was testing an old theory on myself," she said. "It's actually the framework behind the plant." She glanced towards the windowsill, then gave me a sly look. "You know, the plant you've been experimenting with."
I swallowed. "That was - um - "
"No need for excuses. Curiosity is good, Emily!" She stopped just a few feet in front of me, and her voice quickened with eagerness. "The theory can go much further, actually. There's a socio-sexual component, an evolutionary component, even a psychoactive component..."
"Psychoactive?"
"The school would never approve this research, of course. That's why I'm approaching you like this."
Her breast was nearly touching me, and I stared down at it. The green veins, radiating out from the nipple, were throbbing with pressure.
Dr. Vilsark followed my eyes downward. "I expected to make mistakes on my first try," she sighed. "But I certainly didn't expect one of my breasts to fill up!"
"Your breast is... full?" I asked.
"I'm assuming you haven't had children yet, Emily." Dr. Vilsark chuckled. "Yes, the breast is engorged."
"With... milk? Green milk?"
"No." Dr. V frowned. "The fluid is a thick syrup. Nothing at all like breastmilk."
She squeezed her nipple with one hand, as if coaxing some fluid out. I pressed myself back against the wall, but nothing happened.
"It's actually very difficult to express," she went on, "even with my old breast pumps. I've only gotten a few drops out. The engorgement is getting... painful."
Suddenly, I sensed where this conversation was going. My mouth fell open.
"Emily," Dr. Vilsark said softly, "I need you to suckle me."
* * *
Dr. V never asked for my consent - not really - although I wouldn't have felt comfortable saying no anyway. We agreed to meet again after class.
When I returned in the late afternoon, I found myself squinting at the setting sun through the window. Looking down, I was surprised to find Dr. Vilsark already topless.
"Oh, there you are." Dr. Vilsark sat cross-legged on her office carpet, naked from the waist up, as she typed on her phone. "Lock the door," she told me. "I'm just finishing an email."
I locked the door behind me, not looking away from her. Dr. Vilsark's chest was so lopsided that it was almost comical: on the right side was an ordinary breast, slightly saggy with age, and on the left was a bloated, glowing green monster boob.
In other respects, my professor was an attractive middle-aged woman. I noticed that she had multiple tattoos across her shoulders - all deeply faded with time - and a vertical scar on her belly.
After a minute, she glanced up. "Okay. Ready?"
I nodded, although I felt my armpits sweating. I quivered slightly with anxiety.
"Just get comfortable on my lap," she said casually.
Slowly, I sat on the floor. "I'm a little nervous," I admitted.
"Oh, me too!" Dr. Vilsark chuckled. "If anything goes wrong, I'll have to take you to a hospital. It'd be terrible for my reputation!"
Impatient, she reached out and touched my arms - her hands felt clammy - and helped me lay across her lap. My head rested near her elbow.
I sensed an unnatural warmth, like radiation, against my face. Her veiny green breast was suddenly touching my cheek, and I caught a faint odor like rotting vegetables.
"Whenever you're ready," said Dr. V.
I took a deep breath. As the sun set outside, the office was getting darker. My professor's glowing nipple dangled in front of my face.
Closing my eyes, I wrapped my lips around it.
The heat was the first thing I noticed; her breast felt feverish. It was strangely hard, too, like a knotted muscle beneath her skin.
Relaxing a little, I let the flesh fill my mouth. Her nipple felt huge against my tongue, and I found myself pushing it towards the back of my throat.
"That's it," Dr. V encouraged me. "Don't be scared. It's just a breast."
Obeying some long-forgotten instinct, I began to suckle. My lips latched onto her with a tight seal, and Dr. V's arm supported my head. It began to feel surprisingly natural.
Then, after just a moment, I tasted something: a sour flavor like spoiled meat. It coated my tongue, and I struggled not to choke.
"Oh, thank god," Dr. Vilsark sighed. "It's coming out."
The fluid began to flood my mouth, thick and heavy against my throat. Its taste overwhelmed my senses, and I couldn't help swallowing.
A numb sensation spread across my tongue. As soon as I swallowed, the feeling worked its way toward my belly.
It felt... pleasant.
The warm taste of the syrupy milk was growing on me. I suckled steadily, eyes still closed, as my body grew heavier in Dr. Vilsark's arms. My nervousness melted away.
Dr. V seemed to be relaxing as well. Her body slouched, and she gave another low sigh. "I missed this," she mumbled to herself. "I should've nursed my kids longer. I still think about it..."
I was barely listening. Her voice grew distant, like a fading dream. My mouth sucked and swallowed automatically, while my mind floated off into a soft haze.
I got a feeling of vertigo, like I was standing atop a cliff...
And suddenly, I blinked. My eyes snapped back into focus.
I looked down. I was still sitting cross-legged on the carpet, naked from the waist up. My student, Emily, lay at my breast.
Emily's eyelids had begun to flutter, as if she were dreaming, and her body had gone completely limp. Her head felt heavy in the crook of my arm. Still, she continued to suckle me with a steady rhythm.
My breast tingled, almost painfully sensitive, and I could feel the thick fluid flowing. Although different than normal breastfeeding, the feeling was close enough to remind me of the real thing.
Below me, Emily's face seemed to tighten.
Poor girl, I thought. Emily was smart, but she always seemed too nervous. She lacked the confidence to become a successful scientist like me.
But she was pretty, I reflected. I would've loved fucking her when I was younger...
A sudden flashback struck me. For a moment, I was a college student in 1994, and I was calling myself a lesbian. My face was buried between Cindy Waynor's legs, tongue straining with effort, as I felt another orgasm shake her body.
God, I thought, I knew how to eat pussy!
Like a film, I cut to another memory: I was eating out my classmate Lisa, who was still too young to drink. Then Roberta, almost ten years older than me. My dad always said it was just a phase, but I still fantasized about women sometimes... the taste of pussy on my tongue...
Emily's face was growing flushed, and her hips had begun to squirm. She still suckled me, steady as ever, but her breath was coming harder.
The poor girl's horny, I thought dreamily. I'd better get her off.
I worked my free hand up Emily's wool skirt. Just as I'd expected, I could feel her arousal - her heat and wetness - even through the fabric of her underwear.
With deft fingers, I slipped her underwear aside and felt her pubic hair. Warmth radiated from her pussy, and I knew she ached to be touched. My finger slid between her heavy labia and ran along her slippery inner folds. Quickly, I found the small, swollen nub of her clitoris.
Still suckling, Emily gave a faint whimper. Her eyes were closed, lids trembling, but her hips pushed against my hand.
I felt a tingle in my breast - another letdown - with a powerful sense of relief.
