I'm teaching slang this week. Friend A reminded me of the dialogue from the movie the 51st State.
(This, I will not be teaching!)
Felix: Oh, bollocks!
Elmo: Dog's bollocks?
Felix: No, just plain fucking bollocks!
Elmo: No dog involved?
Elmo: So, let me get this straight. "Bollocks" is bad, whereas "the dogs bollocks" is good, huh?