What made PC giggle?

Did Ranbir's comment on Kareena make Priyanka giggle?

A bitchy actress called to say that she found Priyanka Chopra go all giggly head on a music reality show particularly amusing.

The actress along with Ranbir Kapoor and Ileana D'Souza was promoting their film on the show's finale. Ranbir exclaimed that the winner of the show would be announced by his sister Kareena Kapoor (who was to be on the show in a later segment) as he did not want to break any of the finalists' heart.

He said that "Kareena ko bahut saare dil todne ki aadat hai." At this moment PC was so tickled pink that she laughed the loudest! Wonder what Bebo has to say about PC's laughter? Hmmm...