"My head is on straight, Sam. I'm sorry that things happened and I got a little upset about them, okay? I am so freaking sorry for having a completely normal reaction to thinking someone I gave a crap about was dead!"

Okay, so it wasn't a healthy normal reaction, considering he's spent quite a while drinking himself into a drunken stupor just to force himself to sleep at night and lately Dean is entirely too good at functioning when hungover, but that's not the point. The point is that Sam is obviously overreacting.

"So yeah. Yeah, you go work with Bobby. Tell him I said hi."