You awaken naked and strapped to an operating table of some kind, tilted upwards a bit. The only part of you that can move freely is your head, with your limbs and torso shackled to the bed by metallic binds. Your head is pounding.
You’re soon approached by the alien creatures who have abducted you. Your brain does a pop-shuvit as you process whatever these creatures are. Suffice to say they weren’t anything like you would have expected. They resembled 4 foot tall teenage girls with green skin and pointed ears. They were all dressed in all kinds of stereotypical nerd clothes, like suspenders and turtleneck sweaters and glasses and button downs with pocket protectors and such, yet their faces were sexy and neotenous. The only other thing of note about them was the fact that they all had disproportionately gigantic boobs for their size. They were all looking at you rather nervously.
“Uhh... p-p-pardon me, earthling,” one of them approached, supposedly the leader, “W-we don’t mean to intrude, b-but we’re here from the the b-b-big titty nerd girl planet of Coitus-4. W-we harvest seed from other planets in order to propagate our race because... w-well you see... w-we’re an all female species. P-pardon my stammering it’s just... w-we’re really skittish around boys.”
You try to open your mouth to speak but suddenly feel a sharp pain all over your body as the binds start injecting your body with some kind of serum.
“S-sorry!” the leader nerd girl stammered, “We have to turn you into one of us so that we aren’t scared of you! W-we hope you understand! Uhh... oh my... is your penis supposed to swell up like that?”
True to her word, your genitals were starting to triple in size. Your balls were like grapefruits and your dick was like a 2-liter cola bottle. After a while of swelling, it detached itself from your crotch, flopping to the ground with a wet slap and leaving the place it used to be as flat and smooth as a baby’s bottom. The alien nerds all squealed with fright and huddled away from it, hugging each other’s boobs for comfort. The only one brave enough to not join the huddle was the leader, but even she was a little scared of the disembodied peen.
“Uh... d-don’t worry guys, that was supposed to happen,” she assured her others, “N-now we can harvest its semen forever and reproduce. Plus... I think the earthling is starting to look less scary now.”