Class Consciousness

Yesterday on the train back from Cambridge I overheard some interesting conversations between a small boy and his grandfather.

I.

Boy (noticing the first class section of the compartment, just behind him): So there's a first class and a second class? Like the Titanic?

II.

Boy:	That hill would be great for cheese rolling.
Grandfather:	What's cheese rolling?
Boy:	It's a sport!
Grandfather:	Like, on PS3?
Boy:	No, in real life!