Dean: Cas… just tell me your secret.
Dean: What?! You know too?! Come on, Sammy, I’m your big brother! Please, please, please tell me!
Sam: Sorry, Dean, but I won’t. It’s for your own good.
Dean: Fine. If that’s the way you wanna play, I’ll just have to get it out of you.
(Dean starts poking Sam’s head)
Dean: Come on, come on, come on, come on, tell me, tell me, tell me, I know you're gonna tell me, you might as well tell me now, tell me now—
Dean: —tell me now, tell me now, tell me now, you know I'm gonna break you, bro, you might as well tell me now, you're gonna break, this is gonna break you, tell me now.
(While brushing their teeth)
Dean: Tell me now, tell me now, tell me now, come on, Sammy, come on, Sammy.
Dean: Tell me now, tell me now, put it down, lay it down, fess it up.
Sam: You do that one more time…
(Dean pokes Sam’s head once)
Dean: (with a black eye) Hey, I’ve been chatting with Sam and he told me everything, so it’s okay to talk about it now.