Bollywood actress Rani Mukherjee may have performed several intimate scenes on the silver screen in her film career, but locking lips with megastar Amitabh Bachchan in her critically-acclaimed film 'Black' was the most ''difficult'' one.

Talking to here today, Rani said, ''I cannot describe how awkward it was for me. For me, he is Amit uncle and locking lips with him was the most difficult scene for me in the film.''

''We had to show the intimacy and seriousness of the scene where a mute and deaf girl, the role enacted by me, wanted to be loved and caressed. It was the most intimate scene where she had to ask her teacher to make her feel what love is all about. And locking of lips said it all,'' the actress added.

It may be mentioned here that Rani also did intimate scenes with Kamal Hasan in 'Hey Ram' and Abhishek Bachchan in 'Bunty aur Babli'.

''My whole perspective towards life changed to the hilt after doing 'Black'. After portraying the role of a deaf and mute girl, I could understand the sensitivities and sensibilities of the physically-challenged better and I could sense that they are stronger than we able-bodied people,'' the actress asserted.