Chicka Chicka Boom Boom (1999)

Chicka Chicka Boom Boom is a bestselling American children's picture book written by Bill Martin, Jr. and John Archambault, illustrated by Lois Ehlert, and published in hardcover by Simon & Schuster in 1989. The book features anthropomorphized letters and charted on The New York Times Best Seller list for children's books in 2000.

Plot: The lowercase alphabet tries climbing up a coconut tree in order, until their weight causes the tree to lean over, causing everyone to fall out of the tree. After that, the uppercase alphabet (the older relatives of the lowercase alphabet) comes to rescue them. Again alphabetically, while being rescued, most of the alphabet receive certain injuries. Later that night, the letter "a" gets up and climbs back up the coconut tree, proposing a double dare on the rest of the alphabet to catch him.