This is a story from the art teacher I am paired with. We share the same students and schedule. We also have become good friends and a great team of collaborators.
Student: I'm done with my family portrait!
Teacher: why don't you use the black to give them pupils. It will look nice.
Student: my family doesn't have pupils.
Teacher: I am sure they do. With no pupils they would be blind. Here is how you can make the tiny dots with the other end of the paint brush. (Demos here)
Two minutes later there are black dots everywhere.
Student: I kinda forgot what pupils are.
My guess is he thought freckles. I will never know for sure.