at the start of the Bonasera scene in I, after Bonasera pledges his alligence to Don Corleone, he leaves, and Vito instructs Tom to give the job to Clemenza, he doesn't want people who are going to be carried away. They're not murderers, despite what that undertaker thinks. Then the Don sniffs his carnation [scene ends in film, but there is an extended part shown on The Novel For Television], then he looks over at his son Santino, who is staring out the window. Don Corleone whistles at him, and Sonny turns. Don Vito says something like, "are you paying attention?" Sonny says, "yeah, sure, Pop," or something to that effect.

Anyone who has that, please post it. I looked on YouTube, without luck.