It is claimed that the phrase came from a physicist who, upon reviewing another physicist's paper, said, "That's not right. It's not even wrong." Wikipedia claims that the phrase is "mildly derogatory" (as of May 17, 2008). I find the phrase amusing and may apply it in the future.
Okay, now back to wedding preparations. I shouldn't be procrastinating (read that, it's interesting, as always with Robin).