My eyes slowly relaxed as I came down from the Eliza induced high that I had just experienced. "Wait, what did you say," I asked after gulping down the last of her syrupy semen.
Eliza sighed, "My cum. It's dangerous. I didn't expect you to do that, Chris, but it's too late now. Good thing it wasn't very much."
I glanced over to the ludicrous balloon of cum next to me, its heat warming my skin. I was still lost in a fog and hadn't really processed what had happened. Eliza, my best friend, the girl I love, just ejaculated a literal tub-full of cum...from her gigantic cock? Was this actually happening? I had a lot of new and confusing feelings that needed exploring, but that could wait.
"What do you mean? Am I in danger? Eliza, please, explain all of...you," I inquired, my eyes drifting to her deliciously thick girl cock, its well rounded head now lying dormant in the enveloping foreskin, atop her skull sized sperm tanks.
"No, you should be ok, I think," Eliza replied with a hint of hesitation, sweat beading on her exhausted looking face. "No one else has ingested it, so I can't be sure. If my hunch is correct you should feel a tingling sensation in your...you know."
As if she had willed it, my crotch started to feel strange. It felt like I was getting an erection, but much more pleasurable. I reached for my dick and felt it swelling, but not hardening. It crept further down my pant leg until it reached the obvious cum stain on my jeans, making it the same size as my recent erection, yet still soft. My balls had the same sensation and seemed to take up noticeably more space than before.
"No way. This can't be happening," I said in disbelief. My mind told me no, but my body's senses were overwhelmingly real. My manhood had just grown. Eliza had a cock, and a huge one at that. The lingering taste of her sweet seed coated my tongue; a pleasant reminder of our first sexual experience. Our eyes met, both of us having witnessed my growth spurt.
"It still works," Eliza muttered, a glint of desire in her eye. She shook her head, "I'm so sorry, Chris. I never meant for this to happen. I guess I owe you a full explanation." She pulled her dress over her exposed parts and stood back up. Her deep cleavage swung in my face; sweaty orbs capped by stiff nipples which poked through her top. We took our seats on the couch as she retold her bizarre story.
"I was born with both male and female genitalia, as you've seen, heh," a nervous laugh escaped her lips. "The doctors told my parents that I was otherwise normal and healthy, so they decided to let me keep everything, despite my father's concerns. I lived like a regular little girl, but I always had to keep my boy parts a secret. My parents taught me that most people had one set or the other, and that no one would understand or accept me if they found out."
Eliza's voice sounded devoid of its natural perkiness, like her subconscious had taken over. I could tell that these feelings were deeply rooted. They probably shaped her sense of self in a negative way. "She must have felt so alone, even with me," I thought.
"So, I did what I was told. I learned to hide them, only wore dresses, skipped gym class, avoided swimming, and so on. It was difficult, but I got used to it. Everything was fine, until I hit puberty," she clenched her fists, bracing for what came next. "My condition grew out of control and caused tension between my parents. That's when they started arguing about me and what to do. So much so that they ended up divorcing over it. Shortly after, I had to pack everything and say goodbye to you. You have no idea how badly I wanted to tell you everything, hoping I could stay with you and not have to move out here."
"I'm sorry, Eliza. I wish knew. I would have done everything I could have to help you," I said while rubbing her back.
"It's my fault, not yours. Thanks, Chris," she replied with a soft smile. "It was for the best, anyway. My grandfather ended up being the person I needed in my life. You see, he made his money as the head of a biomedical research company. He looked at my condition objectively and put together a small team of his best scientists to help me. They ran a lot of tests on me, some of which I'd rather not talk about. Through their efforts, they figured out that my semen is highly reactive with certain tissues. It apparently has hypertrophic affects on different areas of the body, depending on how it's absorbed."
I tried my best to follow along, nodding as Eliza explained the details of her strange biology.
"It's not just genitals, I can make other things change, too. Like my stomach, for example. Once my cock grew to two feet long, I learned to give myself blow jobs. The result was a lot of cum being swallowed, which expanded my stomach beyond what should be possible," she said as she gestured toward the beanbag chair sized condom.
"That fits inside you?! That's crazy," I exclaimed. The thought of her inflating with cum, her own massive cock stretching her mouth, triggered a part of me I didn't know existed. I don't think I've conceived of anything so erotic in my life.
"Yeah, it's been a while since I've done that. I've been abstaining from my semen for a few years now, ever since I went through addiction therapy. I was afraid of getting any bigger, so I asked for help. Life is already difficult with this size of a monster between my legs," Eliza admitted. "That's why I use the condoms that the scientists developed for me. They can handle virtually any volume of liquid and are resistant to puncturing or any other form of destruction. I wear them all day to stay clean and keep the temptation to ingest it to a minimum."
