celebrating Dean's birthday

Sam: Happy birthday, jerk.
Dean: Aw, you got me a cupake that's so sweet. You going to sing me happy birthday?
Sam: No, I bought me a cupcake. [Sam shoves the cupcake into his mouth]
Dean: But it's my birthday!
Sam: And I'm celebrating.
Dean: Bitch.
Sam: You can probably still taste it. [Sam puckers up]
Dean: [pushes Sam down onto the motel bed] I hate you.
Sam: Yeah, I can tell.
Dean: [straddles Sam and licks the corner of his mouth] Crumb.
Sam: [starts undoing his jeans] I've got better places you can lick.
Dean: Do I have to remind you again that it's my birthday?
Sam: And do I have to remind you that I'm celebrating? Now, shut up and blow me.