The answer to that question is somewhat surprising. Initially, "Bobby" was conceived... followed, after a respectable period of time, we imagine, by his birth. Other than the fact that as a child he was immersed in politics by his parents, his childhood and public education are remarkably unremarkable. Gibbs graduated from North Carolina State University cum laude, with a degree in (surprise!) political science.
For some inexplicable reason, while still in college he began pursuing a career in politics (I must have erred in my assumption that his parents were married when he was born), serving first as an intern for Congressman Glenn Browder. Having mastered the art of osculating the gluteus maximus, he enjoyed upward mobility as a campaign worker, and progressed through a series of little known Congressmen and lesser Senators before joining, in 2003, John Kerry's unsuccessful 2004 presidential campaign as press secretary. Gibbs joined Barack Obama's 2004 U.S. Senate campaign as communications director in mid-April 2004, and remained with the senator through the first two years of Obama's term. Gibbs is credited with guiding Obama through those first years and molding his rise on the national scene. According to the New York Times, Gibbs advised Obama on politics, strategy and messaging, and spent more time with Obama than any other adviser.
Has it struck anybody (besides me) that, when it comes to public speaking, Gibbs is the verbal antithesis of Obama? Gibbs "talent" as a communicator apparently lies in his ability to create written documents, since his demonstrated verbal skills are second only to Mel Tillis! He has hemmed, hawed, mumbled and stumbled his way through every briefing he has held when questions were allowed. The boy has a mind like a steel trap... that was left out in the rain too long. Luckily for him it is easy to get to and from work each day... the short bus stops right in front of his house, and the White House. If he has a sliver tongue, it is unfortunately connected to a lead brain.
Obama does nothing without a reason... perhaps he appointed little Bobby Gibbs as the White House Press Secretary because he makes Obama's explanations of weak-minded policies look just that much better! Another political plum presented as repayment for loyalty rather than as recognition of talent and ability (Idiots, morons and boobs - OH MY!).
Of course, this is just the way I see things, and that doesn't necessarily make the preceding right... or wrong.