And to say you were "chuffed" about something is competely confusing, because it can equally mean you like it a lot or you dislike it a lot, even when phrased identically

I'm surprised to hear that, McGrath. Although I'm English, I only knew the meaning of "chuffed" as "pleased" or similar. I've heard and used "dischuffed" to mean the opposite. Is it a regional thing, this difference in meaning?