Hermione stares at the now empty space he occupied just moments ago. It’s a funny enough joke, she supposes, but the context – them being in the workplace – was not the situation to make the joke. Every other time he’s made a comment like this, it’s always been under the heavy influence of alcohol, so she normally ignores it. Even this one, there is the excuse of simplicity. That it was the expected response to her question, there was no other possible answer.