Oba: Traditional ruler. Also Olu, Ovie and Sultan.
Obey the wind: Skinny, Very underweight individual.
Obioma: See Mobile tailor.
Obito: 1. All night wake.
Objectiv: Multiple choice examination.
Obobo canda: Light skinned person.(Derogatory).
Obodo: Homestead.
Obokun: 1. Cat fish 2. Mercedes Benz limousine
Obrokotor: Obese person.
October rush: Frantic chasing of female freshmen (Jambitoes) in Nigerian universities by senior male students.
Oda: Other.
Odeku: Large bottle of Guinness stout.
Odu: Shady business.
Odudoof: (Derisory) Overweight individual.
Ofofo: Yoruba word for Gossip.
Oga: Person in charge. Also Oga pata pata.
Ogbele o!: Goodness gracious! See Ye pa!
Ogboju: Bluff your way through. See Bold face.
Ogbologbo: Old hand
Ogbono: Soup made from ground Ogbono seeds, crayfish, beef, dried fish, okra, spinach and pepper.
Ogi: Pap made from corn. Also Akamu.
Ogogoro: See Apketeshi.
Ojare: Said at the end of sentences for emphasis. E.g Comot for road Ojare!
Oje marina: Big lie.
Ojoro: Cheating.
Ojuju: Masquerade.
Okada: 1. Name of Nigerian Airline. 2. Motor cycle taxi. See By air.
Okirikpotor: 1. Eczema. 2. Dermatitis.
Okpetu: 1. Trouble 2.It has happened!
Okporoko: Stork fish.
Okrika wake up: Second hand clothes. Also Gorgio Amadi.
Ol'boy: Yo my man.
Ole: Theif. Also Teif.
Olodo: Dunce.
Olofofo: Gossip ( Yoruba word). Also Tatafo and Amebo
Olopa: Police officer.
Omi ni polish: Patent leather shoes.
Omo: 1. Child 2. My friend 3. Popular detergent powder.
Omo ale trousa: Literally means Prisoner's trousers i.e. Trousers that barely reach the ankles. See Jump up pee. Also called Michael Jaskin.
Omolanke: Labourer for hire who carries goods in a large custom made wooden wheelbarrow.
Omoge: Fine girl. Also Chinani, Chickito, Gboyen, Si si and Babi.
Omota: Ruffian or rude boy.
One day one day: One of these days. Used as a warning for those involved in dodgy acts e.g One day one day monkey go go market e no go come back meaning everyday foe the thief one day for the owner.
One kain: Odd E.g Dat guy dress one kain.
One thousand and four: Popular block of flats in Lagos Island.
Onioburu: Night soil man. Also Agbepo.
Opaks: Worthless.
Opari: It is finished.
Opeke: Good looking girl. See Omoge.
Open eye: 1. Wise up. 2. Become sexually active.
Open mouth: 1. Talk e.g Abeg no open mouth laik dat.2. Astonishment e.g Ol' boy, the way dem spray money nyanfu nyanfu for dat party, Omo na so I open mouth.
Open ya sense: Use your intelligence.
Operation: Armed robbery.
Operation sweep: ( Defunct) Special police anti-crime task force.
Opkor: Juju.
Opon: Yoruba word for prominent forehead. Also Crash helmet.
Oppressor!: Owner of big car.
Orenj: Orange.
Osa straight: Molue. Literally means Straight into the lagoon. Called so because of accidents involving Molue Buses plunging into the lagoon in Lagos.
Otopiapia: Rat poison.
Over-graduate: Postgraduate student. (As opposed to undergraduate).
Overs: Overseas.
Over stone: Disallowed goal when stones are used for goal posts and the ball goes directly above the stone.
Ovie: King.
Owambe: Yoruba word meaning it is there, denoting a lavish party with live music.
Owo: Urhobo soup made from palm oil, dried meat and fish, crayfish, potash, pepper, cassava starch and Egidije. Also called Oil soup.
Oyinbo: 1. Caucasian 2. English 3. Big English words.
Oyoyo: 1. Good times 2. Jollification.. See Ariya.