Alia Bhatt's Gangubai Kathiawadi co-star Shantanu Maheshwari has HILARIOUS reaction when asked 'Aap mama bane ya chacha' [Watch Video]

Alia Bhatt and Ranbir Kapoor are expecting their first child, and the actress' Gangubai Kathiawadi co-star Shantanu Maheshwari has a hilarious reaction when he was asked whether he will become Mama or Chacha. Watch the video here...