b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Clay Mission [Exp.] Reject RD1 [Type] Pun Ref PQ [In-joke] 
The title is a pun on Clay-mation, the technique used to make Episode 5. Adric and Mel are singled out here because of the general fan-hate for these two companions. The quote makes it plain we don’t care for these characters.
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke