The term 'Busy Little Insect' is a reference to the ANT, which is a three-letter word. Ants are small, social insects that live in colonies and are known for their hard work and industriousness. They are found in almost every habitat on Earth and are among the most successful species of animals. Ants are omnivorous, meaning they eat both plants and animals, and they are capable of carrying objects many times their own body weight. Ants are also known for their complex communication systems and their ability to work together as a team.