I noticed something in The Godfather: Part II when, during Hyman Roth's birthday cake presentation, Johnny Ola seems to cut his finger when preparing to cut the cake. He grabs a napkin to wrap the finger, and holds the finger to his mouth. The next scene, he's leaning on the rail as though it never happened, and nothing more is ever made of the event. Was this a plot point I missed, or a real accident, or what?
He didn't cut himself, he got some white icing on his finger after messing around with the cake (taking the sparkler off and rearranging it) and he licked it off and then wiped it with his napkin.
Source: I watched the scene in HD just now. :) It's definitely white and not blood.