This is a true story.
"Keith I'm pregnant."
"How? You're supposed to be on the pill."
"Well we were talking about baby names last month so I assumed that that meant that you wanted me to stop taking it."
"Why the hell would you think that?!"
"Clear as day, you said "Amelia is such a pretty name" then you said that if we had a daughter that you would call her Amelia."
They didn't talk civilly for a year after that, and she had her third boy.