I must misunderstand
A clever trick to avoid getting yelled at when you know the person talking is wrong.
I must misunderstand. You said the deadline was Friday. It’s Monday, and I haven’t even started.
I must misunderstand. You think I’m supposed to be happy about this? I’ve been working 12-hour days for a month.
I must misunderstand. You said the client was satisfied. They sent me a 10-page complaint.