-That is exactly why our lives suck. I mean, come on, we hunt monsters! What the hell? I mean, normal people, they see a monster, and they run. But not us, no, no, no, we search out things that want to kill us. Or eat us! You know who does that? Crazy people! We are insane! You know, and then there's the bad diner food and then the skeevy motel rooms and then the truck-stop waitress with the bizarre rash. I mean, who wants this life, Sam? Seriously? Do you actually like being stuck in a car with me eight hours a day, every single day? I don't think so! I mean, I drive too fast. And I listen to the same five albums over and over and over again, and I sing along. I'm annoying, I know that. And you, you're gassy! You eat half a burrito, and you get toxic! I mean, you know what? You can forget it. Stay away from me Sam, OK? Because I am done with it. I'm done with the monsters and the hellhounds and the ghost sickness and the damn apocalypse. I'm out. I'm done. Quit.
-from season 4's "Yellow Fever"