b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Keeping Up with the Joneses [Exp.] LoT [Type] Pun [In-joke] 
The title is a popular expression made to serve the idea that there are an awful lot of characters with that surname in Doctor Who.
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke