'Jersey Shore' Boys -- Fixing Their Speech Impediment

Ronnie and Pauly D from "Jersey Shore" have barely mastered English -- but TMZ has learned they're already trying their hands at Italiano ... all in preparation for their new season abroad.

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A rep from Rosetta Stone tells TMZ, they sent their Italian language program to several members of the "Jersey Shore" cast -- and according to a source close to the show ... Ronnie and Pauly have already made impressive progress with the program.

In fact, Ronnie even talked about his progress on Friday's TMZ Live.

No word on the other cast members' language-learning plans.