Scouse (accent)

Scouse was an accent and dialect of English associated with people from Liverpool. (PROSE: I Am A Dalek)

Behind the scenes
The name of the dialect is occasionally taken as a designation of the people speaking it. In Series 13, Dan, and Yaz are frequently calling each other Scouse (Dan), and Yorkshire (Yaz) in friendly banter. On occasion, Dan even refers to himself as Scouse, or even "Official Scouse".