Sorry, but I think the point Abdussamad (and to a lesser extend MPOE-PR) is trying to make is, that "security by obscurity" is a bad idea. While this is true, I don't think that the suggested method is such a "security by obscurity"-idea.
You can put the whole process described above on a piece of paper together with your cloze-text.

It has about the same drawbacks like a brainwallet though: If you get a stroke or if you die - the BTCs are gone.

Thanks for taking your time on commenting!