I think this code is my masterpiece- let's see what you think:
In all seriousness, though: I came up with this cipher recently to test a friend of mine who claimed he was good at cryptography, with the solemn promise that it had a solution. He still hasn't found the solution, even though he (as well as you, I bet) has already seen it before. It is one sentence, in English. I don't really know that it's my masterpiece, but I imagine it's good enough.