Imagination -- Juvenile fiction. Excuses -- Juvenile fiction. Tardiness -- Juvenile fiction. Imagination -- Fiction. Excuses -- Fiction.

Schools -- Juvenile fiction. Teachers -- Juvenile fiction. Television broadcasting -- Juvenile fiction. Schools -- Fiction. Teachers -- Fiction.

Captain Underpants (Fictitious character) -- Juvenile fiction. Brainwashing -- Juvenile fiction. Inventions -- Juvenile fiction. Elementary schools -- Juvenile fiction. Supervillains -- Juvenile fiction.

Friendship -- Comic books, strips, etc. -- Juvenile fiction. Schools -- Comic books, strips, etc. -- Juvenile fiction. Middle schools -- Comic books, strips, etc. -- Juvenile fiction. Middle school students -- Comic books, strips, etc. -- Juvenile fiction. Boys -- Comic books, strips, etc. -- Juvenile fiction.

Captain Underpants (Fictitious character) -- Juvenile fiction. School principals -- Juvenile fiction. Monsters -- Juvenile fiction. Superheroes -- Juvenile fiction. School principals -- Fiction.

Boys -- Comic books, strips, etc. Middle schools -- Comic books, strips, etc. Middle school students -- Comic books, strips, etc. Sixth grade (Education) -- Comic books, strips, etc. School elections -- Comic books, strips, etc.