The thumb suck celebration is dedicated to his baby-daughter. No mocking of Totti whatsoever.
He probaby respects Totti to much to mock him, saw Totti do the same thing and copied it.
I thinl it was one of those things where if we are to be great with these players Krasic needs to lead and the only way to do that is give him attacking freedom and correct him after the game til he is refined. Of course he gets freedom he will be selfish or to unselfish his first game but if he can learn well then he will be dominate. I think he is a little scared by such little space some times and starts dribbling and cant switch to pass mode. Although I hope we keep giving him freedom and help him refine his talent.