A Monster Wrote Me a Letter by Nick Bland, paperback picture book, first published by Scholastic Australia in 2005.
When the boy intercepts a letter from a monster that was meant for the monster living under his bed, an unusual play date occurs. Both the boy and the monster are rather nervous about their play date and they each try to do some things to impress the other. The boy puts out prickles and piranhas, while the monster bathes and combs his hair. The play date is a roaring success (pun intended!) as they teach each other some new things.
This is a delightful story with rhyming text that my kids want to read over and over. It is amusing and different, and very entertaining. This is a perfect book for preschool through lower primary school, but all ages can enjoy this funny tale. I certainly do!