Actor Aamir Khan revealed that Amitabh Bachchan warned him against 'abusive dialogues' in his 2011 film 'Delhi Belly'. Aamir shared that he didn't expect the film's original teaser to be a "big flop" and added that Bachchan had a "strange" expression while dubbing dialogues for the teaser. "Amitabh...saw...film's trailer and asked me, 'Are you sure this is alright?'" Aamir said.