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It doesn't meet your guidelines, but a few will get it.

It's not secret that I'm a big fan of Dan and DPOS but this is quite a funny one for those who can get it.

For the people who don't get this one, these are the words Satoshi Nakamoto told @dan in a conversation on bitcointalk (if I remember well)

One of the best so far, but you did forget an "r".