Sam: I haven't read all the books yet.
Dean: You're going to read the books?
Sam: Yes, Dean, I like to read books--you know, the ones without pictures.
Crowley: This litter box is warded against everything, even Wicked Witches. Big fan. Love your work. What's the matter? Cowardly Lion got your tongue?
Charlie: Did you really walk down a brick road in these?
Dorothy: No, I never actually wore them. Seemed kind of tacky wearing a dead woman's shoes. Plus, I'm no good in heels, you know?
Dorothy: You have no idea how odd it is having a series of books written about you.
Sam: Actually, I--I, uh, do know. And it's definitely weird. But you know, end of the day, it's our story so we get to write it.
Dean: Think she'll be back?
Sam: Of course. There's no place like home.
Music: For Those About to Rock We Salute You (AC/DC)
Australia: November 4, 2013 on Eleven
Norway: January 24, 2014 on FEM
Finland: October 10, 2015 on Sub
Dean: So, I, uh, picked you up season one Game of Thrones.
Referencing the novels by George R.R. Martin and subsequent HBO TV series Game of Thrones (starting in 2011). Game of Thrones is the first of a series of novels portraying the political intrigue in the fantasy world consisting of two major continents, Westeros and Essos, and the civil war that takes place for the Iron Throne of the Seven Kingdoms.
Crowley: Neither of you saw Wicked?
Referencing the 2003 Broadway musical, based on the novel Wicked: The Life and Times of the Wicked Witch of the West by Gregory Maguire. The novel is the first of four books telling a revisionist tale of Elphaba Thropp, the green-skinned woman who eventually becomes the Wicked Witch in L. Frank Baum's series of Oz books. The musical was nominated for ten Tonys in 2004 and won three of them.
Charlie: Was that your Batman voice?
Referencing the most recent Batman trilogy of movies as of this writing, starting with Batman Begins (2005). In the movies, Bruce Wayne (Christian Bale) speaks with a distinctively lower and raspier voice when speaking as Batman.