SWMBO
n.— «SWMBO. It’s pronounced “swimbo.” While we might be able to take credit for the initialism and pronunciation, the phrase is actually a phrase Idj first heard and read in the John Mortimer series “Rumpole of the Bailey.” In it, Rumpole refers to his wife as “She Who Must Be Obeyed,” and, yes, you can hear the capitalization just as Idj wrote it.» —“Idj’s SWMBO” by Grung SWIMBO (Canberra, Australia) July 1, 2004. (source: Double-Tongued Dictionary)
Further reading
Unparalleled misalignments are pairs of phrases in which the words in one phrase are each synonyms of the words in the other, but the phrases themselves mean different things. For example, the phrase blanket statement can be paired with cover story...
Here’s a clever unparalleled misalignment, in which the word or words in one phrase are each synonyms of the words in the other, but the terms themselves mean different things: break ground and Cleveland. This is part of a complete episode...