Former First Lady Barbara Bush sat down with Steve Doocy to mark 25 years of spearheading literacy efforts as founder of the Barbara Bush Foundation For Family Literacy. Mrs. Bush spoke candidly about her relationship with her oldest son, former President George W. Bush.

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She described a special bond between the two, since she was just 21 when he was born, recalling that they would golf together and she would "throw him off the course for profanity."

"We did a lot of things together and we went through some very tough times too. And he was my hero. Still is. That hurts when people criticize George W. and don't ever dare do it in front of me," she said, adding that Jeb Bush will also fiercely come to the defense of his brother.

Doocy asked whether the 2016 presidential matchup could end up being Hillary Clinton against Jeb, pointing to a recent New York Times column on the possible matchup.

Mrs. Bush called Jeb "the most qualified person in the country, there's no question about that."

Doocy highlighted the fact that the former First Lady is one of the most "widely admired women in the world" because she's always been a "straight-shooter." 

"I've given that up for Lent," she joked.

Watch the interview above.