For months, the two of us have been trying to figure out a way to have a conversation about the experience of being biracial. This week we just go for it. First, we talk about the cultural and historical suspicion America still has of black-white interracial romantic relationships. It gives us an excuse to revisit the reason ‘‘Get Out’’ has been one of the year’s major movies: It articulates the previously inarticulable about race. Then we consider the offspring of interracial coupling — whether the possibility of occupying two identities (or more) is a choice, a luxury or a delusion; and what fears, doubts or envy nonbiracial black Americans might feel about biracial black Americans. We drop in on Spike Lee’s ‘‘School Daze’’ and the sitcom ‘‘Black-ish.’’ We consider our feelings about Rashida Jones, Drake and Vin Diesel. We unpack the writings of Zadie Smith and Barack Obama. And we kind of have to ask: Aren’t we all a little bit mixed?