Bollywood actor Abhishek Bachchan visited Radio Mirchi station in India's entertainment capital Mumbai on Monday to promote his upcoming movie Paa'.A home production of Amitabh Bachchan Corporation Ltd (AB Corp Ltd), Amitabh Bachchan hopes to revive his production House with this much-hyped film.Directed by R. Balki the film 'Paa' stars Amitabh Bachchan who plays a patient of a rare disorder called progeria.While interacting with the media on how he felt on playing father to Amitabh Bachchan, Abhishek replied, Not much because we both decided that relationship between my character and Auro (character played by Amitabh) should be one of friends not the traditional conventional father and son they are friends and see they do everything together. They have fun together, so its not traditional father and son relationship they are buddies my father is my best friend.Progeria is an extremely rare condition of early ageing. Those born with progeria typically live about 13 years, although many have been known to live into their late teens and early twenties.