b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Heels [Exp.] Key [Type] Ref [In-joke] 
The existence of this card pokes fun at all the high heels worn by female companions over the years, and the amount of running they always had to do in them.
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke