Washington, Feb 3 : Brad Pitt's father William was apparently shocked when he saw his son's makeover in `The Curious Case Of Benjamin Button'.

In the film, Pitt portrays the role of a man, who ages backwards after being born with the physical limitations of an old man.

The make up that Pitt went through for the role was so life-like that it terrified his elderly father.

"Bill was stunned to see Brad looking older than he is. It seemed he was actually a bit perturbed, He said it was eerie. He looked pleased though when the director explained that the make-up process took five hours every day and that Brad sat there patiently never complaining," Contactmusic quoted a source, as telling the Daily Express.

Pitt's father then revealed that his son was brought up like that to be tolerant and patient in every given condition.

"He (Bill) replied, ''That''s how he was brought up: you get through it and you don''t complain," the source said. (ANI)