I also noted Bufalino's expression during the exchange; he seemed to be amused also.
I think Bufalino's laugh when Hoffa talks about Pro confronting him "while I'm eating my ice cream" was pretty much Pesci going off script, too.
"...the successful annihilation of organized crime's subculture in America would rock the 'legitimate' world's foundation, which would ultimately force fundamental social changes and redistributions of wealth and power in this country. Meyer Lansky's dream was to bond the two worlds together so that one could not survive without the other." - Dan E. Moldea
