I don’t think that this actually counts as a cipher, but it might be that it doesn’t count as a code. Possibly both. You decide.
I use this as a very quick way to disguise words. Don’t ask why or what sort. It is very easy to write and read on the fly. I just want to see if you need to know how it works to figure it out. I came up with it myself, but it isn’t at all original. Try it.