A large, grandiose party thrown by Nigerians anywhere in the world, especially Yoruba Nigerians that involves a lot of food, dancing, loud music, and spraying
(Nigerian term meaning the act of throwing money on a dancing person). There are often numerous guests, and usually the guests are divided into groups according to their aso ebi
(uniform - some people might wear white and blue, some gold and red, etc). These parties take days and sometimes weeks and months of preparation, and have been known to block entire streets and roads, especially in Lagos, Nigeria.
My aunt threw an Owambe to celebrate my graduation from college.