"Kid, open the door." Dean firmly uttered as you locked yourself in your room for one good reason, he chased you with a hammer in his hand.

Dean was frustrated with himself for scaring you, being possessed isn't fun at all and now he scared the only person who never saw him as a bad guy.

"Look, I'm sorry, okay? That.. that wasn't me." How was he supposed to explain to you a demon was possessing him? He never told you about demons or the other supernatural creatures he was fighting against.