Bollywood superstar Amitabh Bachchan took to Twitter to promote his upcoming film 'Ki and Ka' in a unique way.

Big B released a 'speaking picture' on his VoxWeb profile that has a still image of him and his wife Jaya Bachchan on the sets of the movie with him talking in the background.

'Ki and Ka', which stars actors Kareena Kapoor Khan and Arjun Kapoor in the lead, is based on the life of a young, married couple whose relationship challenges the gender roles placed upon women and men in Indian society.

In the film, Arjun will be seen playing a house husband, while Kareena will play an ambitious marketing manager.

Ki & Ka', which is slated to release on April 1, is Balki's first film in which the 'Piku' actor will not be playing the lead.

They have previously worked together in films like 'Cheeni Kum', 'Paa' and 'Shamitabh'.