Not Obvious

There was this art exhibition. And they had this installation with some headphones nearby. Next to the headphones was a sign that said “no sound”. The headphones were lying upside down. I picked up the headphones and they were actually playing the supposed soundtrack of the installation. I was amazed by the surprise and told some of the staff that I love the idea of the misleading sign. They looked at me in disbelief and checked the sound. After that they quickly apologised and explained that this isn’t part of the installation because they really thought the headphones were broken.
I liked it more the first way.