You would know your mother tongue by default, English certainly and to a large extent the national language Hindi. However, it takes a different pedigree to learn the language of another state and then speak fluently despite not living in that place.
But then, the tough taskmaster S S Rajamouli is someone different. It is known that his movie Baahubali-The Conclusion is facing issues in Karnataka in terms of release. Responding to that, Rajamouli released a video and the best part is, he spoke entirely in Kannada.
As a result, many started wondering how he is so fluent so here is the reason. Shivashakti Datta, father of music maverick M M Keeravani and his brothers have stayed in Bangalore and other places of Karnataka for a long time. Hence, Rajamouli grappled it very well.