In the film "mangayarkarasi" Madhuram, criticizes her son for not being wordlywise. The son's attempt to disprove has become the actor's nickname.Who?

The role was played by a certain Radhakrishnan. In the movie T.A.Madhuram scolds him that he is not streetsmart. She says to become big in life, he should "kaakaa Pidikanum". Radhakrishnan climbs up a tree and literally catches a crow. After the movie he came to be called as Kaka Radhakrishnan.