When Mr. French speaks to you, en français, in a Target parking lot after hearing you speaking French to your (wiggly) children, ask him how long he was in France.
He will reply, en français, “Oh, only a year. My French is not very good.”
You will then reply, en français, “Oh no, it’s very good.” And then you will go on to explain how you (who are French) lived with your (American) husband in France for four years but he speaks en français worse than Mr. French.
And then you will illustrate your husband’s lazy tongue by saying, as only the French could, “blah, blah, blah.” with your tongue hanging out.
Later, Mr. French will beam from ear to ear as he recounts the conversation to his wife at home.