The yellow minibuses that are Lagos’s actual transport system. They carry more people than every bus, train and ride-hailing app combined.
A danfo runs a fixed route between motor parks and leaves when it is full rather than at a time. There is no timetable, no route map, no stops and no published fare — the fare rises with the petrol price, and again when it rains.
You travel in stages rather than journeys: mainland to island is usually two or three danfos with a walk between them.
Keep small notes. Change is a running argument.