Yippie is an exclamation of joy and excitement, often used to express enthusiasm or approval. It is derived from the phrase 'Yippee Ki Yay, ' which was popularized by the movie Die Hard. The term is often used in celebration, such as when someone achieves a goal or wins a competition. It is also used to express surprise or delight. Yippie is a shortened version of the phrase 'Yippee Ki Yay, ' which is an expression of joy and excitement.