Turtle in a Half Shell

Student: "I don't know where my lunch box is."
Me: "Did you put it in our black bucket after lunch?"
Student: "No, I put it in a green bucket because I like green and Ninja Turtles."
Me: "Well, our bucket is the black bucket. So if you want to have your lunch box at the end of the day you need to put it in the black bucket.
Student: "But I like Ninja Turtles."