Again, language helped me avoid many panic attacks during the police controls I had (one of which was in the hall of my building) or talking to the passport controls once I was leaving the country: I had taken my glasses off for the identity check and since after a while it seemed like the paperwork was over I put them back on. The lady noticed it and said quite peremptory: "There is nothing to see". So, I took them off again haha. But by then, since it was my last day, I was like "OK, that's the default mood...".