Gov. Christie Tells 'Irresponsible' Ex-WH Doctor to 'Shut Up'

N.J. governor lashes out after President Clinton's White House doctor criticized weight.
3:00 | 02/07/13

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Transcript for Gov. Christie Tells 'Irresponsible' Ex-WH Doctor to 'Shut Up'
We're going to turn to new jersey governor chris christie speaking out about the third time about his weight. He's been funny at times. But this time, christie was plain angry. Lashing out at president clinton's white house doctor. Dan harris has the story. She must be a genius. Reporter: Chris christie lampooning dr. Connie mariamariano, who weighed in about his weight making him a time bomb. My 12-year-old son comes to me and says, are you going to die? If she wants to get to a plane and come to new jersey and examine me, I'll have a conversation with her about that. Until that time, she should shut up. Reporter: Dr. Mariano fired back in a statement. It doesn't take a physician to look at him and observe he is overweight. It is sad that he cannot take my advice. And instead, chose to attack me personally. But some doctors we spoke with agreed with the governor. When you look at him, do you think he's a ticking time bomb? I think it's really very judgmental to have atrong conviction when you have no innate knowledge of his level of activity, his level of fitness. Bring it, fat boy. He's not sure if he's going to run for re-election next year. I'll collapse that bridge when i get to it. Reporter: The governor has employed a range of tactics for dealing with public discussion of his size. Eating a doughnut on letterman. And chatting with oprah, who has had battles with her weight. It's like a drug for me. I think it's probably something similar for me. I just, you know, find myself just eating all the wrong things. Reporter: Now, he is showing that aside from humor and humility, he is willing to use another weapon in the ongoing discussion over his weight, his withering verbal skills. This is just another hack who wants five minutes on tv. Reporter: For "good morning america," dan harris, abc news, new york. You can see, he was hot yesterday with that.

This transcript has been automatically generated and may not be 100% accurate.

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