Shrodingers hunger

A person who waits until they see or know what the food is to decide if they're hungry or not
It's typically picky eaters who brush of their pickyness with "I'm not hungry"

Person 1: I'm so hungry
Person 2: It's curry stir-fry for dinner
Person 1: I'm not hungry
Person 2: You got Shrodingers hunger, huh?