b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Polly - Lunar Secretary [Exp.] 7 Docs [Type] Pun [In-joke] 
The quote has her serving beverages, but note also her Vortex of Polly Cocktail, which infers another type of drink.
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke