Dean was making a plan to hunt a vampire down, a specific one. But he was so much into the job that he forgot how to actually communicate. You walked into the kitchen seeing him yet still working on cleaning his guns and loud rock music in the background, he didn't raise his eyes to you, he just kept working and then he loaded a gun and looked up at you

"You mind telling me what the hell are you doing? Because from how I see it, you seem to not think straight, a gun wouldn't kill the vampire you know that." You said sharply.

"Maybe not, but this bad boy is someone else. You coming along or not? I want to be ready at midnight." He said back, he was annoyed that you spoke to him like he was stupid but he knows that was not what you meant.