There's a good entry in Wikipedia. It could have come from the Arabic, or possibly some Sicilian slang word, according to that source. While the acronym may well apply to the French when they occupied Sicily, it is clear that the term predates
the Norman occupation of the island.
"Io sono stanco, sono imbigliato, and I wan't everyone here to know, there ain't gonna be no trouble from me..Don Corleone..Cicc' a port!"
"I stood in the courtroom like a fool."
"I am Constanza: Lord of the idiots."
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