If you know the answer you are my hero

[scotchnwhiskey]

Hey People,

I saw a story on Literotica a while back that I haven't been able to find. It involved a college kid creating a chemical that makes his dick grow when he cums and he girlfriend takes advantage of it and makes him grow to gigantic sizes. Anyone know the title/author... i liked the story and haven't been able to find it since. I would really appreciate any help.

Thanks