The other day I answered the door to my postman. I was signing for stuff, like you do, when my kid came downstairs with only his underwear and a t-shirt on.
Now, the postman couldn’t see him from the front door, and I scribbled my signature and said, to my son, “You need to put some trousers on.”
My postman, very slowly, looked down at his trouser-clad legs with a mixture of confusion and horror, and then looked back up at me.
When I explained I was talking to my little boy out of his line of sight, he gave a very solemn nod and said: “I thought I’d put trousers on this morning, but suddenly when you said that, I really wasn’t sure.”