In December 2015, comedian and Chicago-area native Cameron Esposito recorded her first comedy special (“Marriage Material”) at Chicago’s Thalia Hall just two days before marrying fellow comic Rhea Butcher, who served as her opening act. Saturday night, as part of their national “Back to Back” tour, the duo took the stage together to a sold-out crowd at the Vic as triumphant co-headliners. “We are so excited to be here in my hometown,” effused Esposito, sporting a Cubs shirt, black pants, black shoes and a new, slicked back hairstyle that replaces her familiar side mullet. “In the town we met and fell in love. One of my favorite places in the whole world.” Butcher, in blue jeans and brown shoes with a long-sleeve blue button-up underneath a vest, seconded the notion, and the two launched into a half hour of shared stage time, discussing their relationship, their careers and the specifics of tour bus bathroom etiquette while playing off of each other for laughs. In this section of what is essentially a three-act night that runs around 100 minutes all told, Esposito’s sometimes rapid-fire delivery, accented occasionally with a sudden outburst, is balanced nicely by Butcher’s frequently deadpan delivery. Describing the evolution of their relationship, Esposito says they were hanging out “a couple of hours a week, then it was a lot of hours a week …” at which point Butcher interjects smoothly: “Then it turned into lesbian hours a week.” Since their wedding they’ve been working together even more, co-creating and co-starring in the TV show “Take My Wife” for the now-defunct subscription service Seeso (while the first season of the show aired, the for the already-wrapped second season). And now they’re traversing the country in a cramped tour bus, introducing themselves to a whole new level of intimacy and overexposure: “We’ve been turning our bickering into a remarkable stage show,” Esposito said proudly. And she’s not wrong. It is remarkable to see a couple interacting on stage in front of a live audience. Esposito acknowledged that the set-up has its roots in vaudeville, but in the modern age of comedy, despite the popularity of the art form at the moment, a married