Ranbir Kapoor takes his work seriously! For the role of a young boy from a Jat family in "Rockstar", the actor actually went and stayed with one such family, ate at local dhabas and even milked cows.

In "Rockstar", directed by Imtiaz Ali, Ranbir plays Janardan Jakhar, the youngest son of a traditional Jat family. So, it was important for the Kapoor boy to pick the mannerisms for a convincing act. Imtiaz joined him too.

"Imtiaz and Ranbir spent an entire day with a Jat family based on the outskirts of Delhi. They would hang around with the young boys of the family, sleep on the cots, eat out at the local dhabas and enjoy hookah in the evening...Ranbir even assisted the men of the house in milking the cows!" said a source from the unit.

"Ranbir had the time of his life trying to milk the cows! It was such an amusing sight...everyone was in splits!

But all in all, he learnt a lot about the lifestyle of a typical Jat family which was important for filming, and also ended up having a great time doing things that he wouldn't otherwise get to experience," added the source.