Dean, Crowley and others in “Unfinished Business”

Dean

[To Bartender] Two shots here. He'll have something fancy, with your tiniest umbrella.

Crowley

So...How you been feeling? On edge? Pent-up? Unfulfilled?

Dean

You sound like a Viagra commercial. You know that, right?

Crowley

This isn't about...Little Dean. It's about the Mark. It changed you.

Dean

[flashing black eyes] I've noticed.

Crowley

And I know that you want to keep the party going. You want to have fun, fun, fun till daddy takes the black eyes away. The fact is...you need to kill now. Not want to, not choose to --need to.

[setting Dean's shots down and a cocktail in front of Crowley] There you go.

Crowley

[with a withering look] Danke. Face it, darling. You're an addict. Death is your drug. And you're gonna spend the rest of your life chasing that dragon.