A doll, a mannequin, a statue, or a piece in a picture would move around and speak like a human being, but when someone is watching it, it suddenly stops whatever it is doing, pretending to be a normal object. Sometimes, innocent children or sufficiently open-minded individuals could interact with it, but not others.
- In Gnomeo and Juliet, Gnomeo and Tybalt were fighting each other when an old lady opened the window and looked at them. They instantly took a strange pose and stood still until the old lady went away.
Hello, Unknown Troper. You'll need to get known to lend a hand here.