He’s a make-and-mend sort of deity. One day whilst patching up the upper layers of the world and making a third storey, a section he was standing on fell down.
He sighed, shook his head and said ‘I’m gonna go fishing’. Which he did. And he caught a woman. Well, a primeval proto-woman — she had one teeny weeny aperture the size of a hummingbird’s anus.
So OMAN performed some sexual surgery with the aid of some piranha teeth. You may wince, but it worked. He went on to father all the Yanomami ancestors. Other tribes were just made from river mist and foam, and colored in by a large bird.
Meanwhile, we assume the world is still falling slowly to bits.