The meaning behind Parry Gripp's song "Banana Rainbow" is to celebrate the diversity of bananas and promote the importance of banana diversity. The song starts off by introducing the different types of bananas, their colors, sizes, and flavors. The lyrics mention various types of bananas such as Cavendish, Blue Java, Manzano, Burro, Pink French, Crocodile, Tiger, Mysore, Plantain, and Goldfinger, emphasizing that there is more to bananas than just the regular Cavendish variety. The song also highlights the history of bananas, mentioning a variety called "Big Mike" that was popular but eventually disappeared due to a disease. This event serves as a reminder of the importance of cultivating and preserving different varieties of bananas, rather than relying solely on one type. The lyrics convey the message that banana diversity is essential for a stronger and healthier banana world. Overall, "Banana Rainbow" by Parry Gripp is a lighthearted and catchy song that celebrates the variety of bananas and promotes the idea of preserving banana diversity for the benefit of the fruit's future.