Slang is very common in everyday speech. Almost every group, organization, and society has their own “lingo”, which makes sense to them, but not necessarily to others. The Italian mob is no different.
If one were to rent movies dealing with Italian Gangsters, such as: Good Fellas, or any of the three Godfather movies, they would find many slang words they may not understand. Some of these words are used in place of other words,
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showed last 75 words of 599 total
to know some of the lingo to fit in and understand. This goes for all slang, not just that used by the Italian mob. If you are not part of the group that uses the slang you will probably not understand it. It may take a while to learn all of the slang used by any particular group, but with a little observation it can be done and anyone can understand what is being said.