Script (guión): Idioms, ‘Keep your shirt on’. This means calm down. My brother is very organized and very cautious and we went on holiday together this year. When I went to pick him up to take him to the airport I was 15 minutes late and when I arrived he was in a panic saying, ‘Ahh, we're going to miss our flight now.’
I said, ‘Keep your shirt on. They only tell you to get there 2 hours early to play it safe. We'll be fine.’