In Jesus shaves, why is the Polish student's explanation of Easter so garbled?

In the story "Jesus Shaves" by David Sedaris, we encounter a class in an international school in Paris, where Sedaris was studying. The class is made up of foreign students, all trying to learn French. During the class, a conversation arises regarding Easter, and a Moroccan student asks what "Easter" is.

The first person to try to explain the holiday is a Polish student. However, because her French is very basic, she lacks the necessary vocabulary to explain it well, resulting in a comical and unclear explanation. Her explanation is so garbled because she does not have the language skills that are necessary to explain it accurately.