Why is the movie called Barfi?

Have you heard of Murphy Radio? Seen that cute kid they used for advertising? If not, here is a picture of the kid.

So, this Radio used to be quite famous for decades in India, and the baby, just like Parle n Amul ones, was a symbol that could be identified by almost anyone.

Here, in the story of the Barfi!, Ranbeer Kapoor's mother wanted a kid like the murphy kid, and hence decided to name him Murphy. And even though she died early, probably in childbirth, the kid was named Murphy.

However, since Ranbeer is mute n deaf, he cannot say Murphy, but in the way mute people speak, is able to say what sounds like 'Barfi!', and hence the name of the movie.