He was young, energetic and hungry to seize life. He was like me. You've to admit Ranbir and Konkona together are a pair that no one would imagine. I liked that challenge. And I also saw Konkona has been around in the industry longer than Ranbir. So I conveniently turned the character into a slightly older woman,' Mukherjee said.

Ranbir's dad Rishi Kapoor has done a very fine film about falling in love with an older woman called 'Doosra Aadmi' where Raakhee Gulzar played the unusual love interest.

So doesn't he plan to work with cousin Kajol?

'The thought didn't strike me for my first film. I wrote 'Wake Up Sid' as this young new-age 'Dil Chahta Hai'. It's about today's youngsters. Kajol? Yeah. Maybe in my next film... if I'm allowed to make another film,' he said.

At the moment Mukherjee is worried about how the audience would take to the title.

'But it had to be 'Wake Up Sid'. It's a wake-up call for this rather laidback hero who meets an unusual woman. It's a real film with no lip-sync songs,' he said.

The director was so sad on completion of his film that he got dead drunk.

'I'm very sad that it has ended. Now everyone will move away. It's a heartbreaking process. I don't know how Karan goes through it over and over again,' Mukherjee said.