The look he gives Tony after he mocks him and says "how 'bout that? how 'bout that?". Yes, he was at boiling point there. Then Tony gives his rendition of Under The Boardwalk where he works Janice into the lyrics.
"...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
