This is an addition to the previous definition, which is half right. "Gabagool" is slang for "capicola." It is not a mispronunciation, but is instead in Napolitan dialect, which is what theSopranos and many Italian-Americans use.
Term recently used by Italians to define the "italian-wannabes", people sometimes of Italian origins (mostly Americans) who know nothing about Italy and are arrogant towards the Italians when they try to explain what Italian culture is actually like. The typical "gabagool" does not know how to speak Italian and is deeply convinced that Italians are exactly like televisionstereotypes.
- That gabagool insulted me when I said him that Lasagna is a type of pasta, not a recipe.
- I met a gabagool who tried to convince me that all Italians are olive skinned.