It is customary to kneel when surrendering to a king
The king is supposed to be the Protector of the Realm. If I can't even protect my own wife or my own mother, what good am I?
While Robert smashed Rhaegar on the Trident, my men ate the dogs, because the horses had already been devoured. While the Lannisters sacked King's Landing, we ate the rats.
Ser Jaimie Lannister. Someone forgot to write down all your great deeds
