Recently, I met comedian Derek Gaines at Bushwick Public House, a local haunt that serves booze, coffee, and sandwiches. On a TV above the bar, the “White Christmas” episode of Black Mirror played without subtitles, while an indie-chill playlist provided background noise. Gaines is perhaps best known for playing Jaybird on The Last O.G., but he’s been building a stand-up comedy career for more than 15 years.