It's true that people do talk that way, sometimes, some people. But they also talk other ways. Like all at once sometimes. People make bad puns. I've ever wanted to talk to a second time, talks all portentous and slow all the damn time, every single word out of their mouths.
Nobody has just the right snappy comeback always ready.
If this is reality, get me Noel Coward. It's more how real relationships are. It's just this one comment he made. That's what makes it interesting. For some reason this bothers her.