Duh!

This morning over breakfast, the girl was perusing the school lunch menu. She asked me if it was "May 21th," pronounced twentywunth. I found this amusing and told her she should wish her teacher a Happy May 21th. The response?
"Why would I do that? It's not like it's a holiday." At the same time, her facial expression loudly said DUH! Unfortunately, this is the sign of things to come. Thank God for margaritas.