Hi there, long time lurker.
I'm hoping someone here can help me out, I'm trying to find a story.
It was about a DL who ends up coming into possession of a journal or book where, if you write in it, what is written come true.
I remember, as one of his experiments he makes a baby diaper big enough to fit an adult. And in another case he makes pacifiers as accepted in society and as common as gum.
Does anyone have any idea what I'm talking about?