And who are you, the proud lord said/That I must bow so low?
Only a cat of a different coat/That's all the truth I know.
In a coat of gold or a coat of red/A lion still has claws,
And mine are long and sharp, my lord/As long and sharp as yours.
And so he spoke, and so he spoke/That lord of Castamere,
But now the rains weep o'er his hall/With no one there to hear.
Yes now the rains weep o'er his hall/And not a soul to hear.
Here is the Game Of Thrones Season Two Finale thread, for the episode encouragingly titled "Valar Morghulis". Remember, book spoilers to an absolute minimum, or with mega-warnings.