"...Just swap for a vagina." Mia says while Alex inserts his new penis on her.
She lightly moans. "Trust me, is better than any penis"
"I don't know. I'm having a lot fun right now! But it might be a better alternative to you" Alex manage to say in between his panting. "In the two days I had a vagina I pretty much had sex non-stop, but this is the first time I'm havig sex with my penis."
"I'm sure I've seen a pussy or two lost among all those balls" She loudly moans as the fucking pace gets faster. "Just go for it." Mia still supported her head in your tights as Alex raised her hips to better fuck her. You cock was fully hard but couldn't even get close to her face and was fully ignored.
Mia's moans and orgasm spasms are an argument way more convincing than anything she could say, you might never be able to use your cock on anyone else ever again, but maybe you can get what she is having.
You look in the lost and found box for any pussy you can find. You don't care about browsing through and fondling all those balls in the search for a vagina, some still had cocks attached, all bigger then yours, some are even trully large penises. But they don't stir your interest anymore, not like that, they just leave your tiny cock hard, dreaming about shoving them in your pussy.
You find a perfect pink pussy that you can replace you junk for. You fill your groins with the swap lotion and remove that tiny thing and replace it for your brand new beautifully shaven vagina. You just throw the tiny penis and its balls in the box, you don't even bother labelling them, it's not like you are going back for them. You can just pick a larger one later if you want a penis.