Originally posted by: Alienwho
For those of us who have no idea what you guys are talking about and don't care or know about the book but want to know what is happening that you are so shocked about, please spoil it for us.
SPOILER, DONT READ HERE IF YOU ARE READING THE BOOK
what they are referring to is called the "Red Wedding" where one of the main characters in the book, who is like 19 and a badass general, pretty much the only actual "good" person in the series besides his "bastard" halfbrother, is ambushed and killed at his own wedding celebration by his allies.
They get mad cause he marries some farm girl who he slept with instead of their daughter and after breaking bread and giving him shelter (big deal in the mythology) they murder everyone. Chop off the main dudes head and then his wolfs and stitch the wolfs head to his neck and vice versa. They also kill his mother and a bunch of awesome characters.
However, as another poster alluded to. The people who killed everyone, the Freys, will get theirs, mostly due to magic coming back to the world and what they did was an offense to the gods, and certain people coming back from the dead to get some vengeance.