if you're going to talk the talk, you better walk the walk. that's the big takeaway from our dana bash's exclusive interview with vice president kamala harris' husband douglas imhoff. >> i thought you were scolding me or something. better walk the walk. i'm listening, boris. here's dana bash asking the second gentleman setting asite ego to be the vice president's biggest supporter. >> reporter: boris and amara, in this series, we talk to public figures about what it's like to really be them. and candidly, i have been fascinated with finding that out from doug emhoff, for almost two years since he first became the first second gentleman in history. i know there's no manual to be the second gentleman, because it didn't exist before, but to be the second spouse. >> there's no manual. and dr. biden said as much to me. because i did ask her, well, you have this role, what can i expect?