Written one frosty evening last December when the pair were feeling particularly nostalgic, ‘Grown Up (At Christmas)’, is peppered with humorous snippets of repetitive conversations had with loved ones during the festive season. These irritating interactions serve as a stark reminder that they no longer know one another like they once did. A song that, at its core, reflects upon the passing of time, and hears the artists express the uneasiness and disappointment of not being where they imagined they would be at this point in life.