The Silent Treatment
Y'know, this is something one would think most adults grow out of, yet for some reason, I used to get the silent treatment a lot. I never understood it. If you're pissed, just say so. I would rather that than living with someone rattling around like a ghost in chains, doing everything to make a point of displaying their displeasure, yet being unwilling to just come out and say they're angry. I can tolerate a lot of nonsense, but this is the one thing that instantly makes my blood boil.