Today we visited the in-laws. They were chatting about reminiscences, and next moment father-in-law is referring to himself as Granddad. Except that I thought he was talking about his grandfather. So I asked a dumb question, which he responded to accordingly.
Then I realised. “Don’t call yourself Granddad to us!” I remonstrated him. “We won’t get it, because to us, Granddad is irrelevant.”
I wasn't being overly sensitive, or bitter, or even unkind to him. I was just being honest.