1. An exclamation used to express excitement, enthusiasm, or exhilaration, especially when surfing or engaging in an adventurous activity.
Usage: informal; slang; originally associated with surfing culture

Examples

• Cowabunga! That was an amazing wave!
• The surfer shouted cowabunga as he caught the perfect break.
• Cowabunga, dude! This skateboard trick was incredible.
• The kids yelled cowabunga as they jumped off the diving board.
• Cowabunga! I just won the lottery!