Kids enjoy laughing and are seldom bored when they find something funny. They also ask questions, often to adults, because they understand that the more words they can comprehend about a funny story or a joke, the more they'll enjoy it.
Children are like sponges; they start to smell after a little while.
I like all things grammatical, and I had already written several books about parts of speech, and even the alphabet, so everything that makes up a sentence and even a word was covered except for punctuation.