A Cold Winter's Good Knight by Shelley Moore Thomas illustrated by Jennifer Plecas*

The Good Knight takes his three dragons to a ball on a cold winter's night.  He reminds them to "mind their manners".  They, however, soon realize that they do not really understand what this phrase means as they cause disaster after disaster!
My first grader read this book to himself.
*Highly recommend.
-Borrowed from the library.