The biggest angry-maker I'm experiencing right now is:

1. I ask a specific question.
2. The other person answers a related question that I didn't actually ask.
3. I clarify my question.
4. The other person gets frustrated and said they already answered me.

Example:

Me: Do you want chicken or hamburger for supper?
Them: I eat supper at 6:00.
Me: No, I'm asking if you want chicken or hamburger.
Them: I already told you, I eat at 6:00. You just don't like my answer.