Pica is an eating disorder in which a person eats things not usually considered food. Young kids often put non-food items (like grass or toys) in their mouths because they're curious about the world around them. But kids with pica (PIE-kuh) go beyond that. Sometimes they eat things that can lead to health problems.
Tyler: Eww Jacob just ate an eraser
Jacob: Look up the word "Pica" in the urban dictionary you dumbass