Bollywood actor Saif Ali Khan, who is expecting his second child with wife Kareena Kapoor, feels fatherhood is all about the journey of becoming a responsible dad. Saif shared that he tried to incorporate that essence in his recent rom-com "Jawaani Jaaneman", where he plays an ageing playboy whose life goes haywire when he discovers he has a teenage daughter from a previous fling.

"The story is quite timeless. Its core thought is about acceptance of responsibility and growing up," said Saif, who is father to actress Sara Ali Khan and son Ibrahim from his first marriage to Amrita Singh, and four-year-old son Taimur from Kareena.