I remember this from when PZ first posted it and now it’s been deservedly nominated for an award. It’s an open letter PZ wrote to a child who was proud of asking a stupid question. She was proud because it was what Ken Ham taught her to say and she thought she was doing a good job. The incident threw the horror show of Ham’s ‘teaching’ into sharp relief. As PZ points out, the question Emma asks is a bad one for all sorts of reasons. It doesn’t do a thing to determine whether a proposition is true or false. It was meant (by Ham, presumably not by Emma B) to ridicule; to cast doubt on science in the minds of people who already want to believe it’s wrong.
PZ’s letter is excellent. It describes why the question is a bad one and offers a better question to ask instead. It’s a beautiful piece of writing, too.