Becasue sacred book gets wet or sinks when people were crossing a river, it is lost or the text becomes unreadable. Or it is destroyed when people try to dry it or when they go to bath and let it lie on a shore
Inhabitans of the Middle World are (partly) destroyed (or will be destoyed) once by fire or draught, another time by a flood or the world is destroyed with a flood of fire or boiling water
The couple of close relations originates the mankind
In the beginning of time or after the natural disaster brother and sister, mother and son, or father and daughters are the only human beings. They marry and the present day people are their descendents
In the beginning of time or after the natural disaster brother and sister are the only human beings. They marry and the present day people are their descendents
In the beginning of time or after the world catastrophe brother and sister or mother and son are the only humans. They reject marriage or only the man does not want to marry his sister or mother. After their looks are changed (or only the sister or mother changes her face) they take each other for strangers, marry and beget the new race
Woman gives birth to a gourd, a bag (with eggs), a piece of meat. The flesh is cut into pieces which turn into people or many people come out of the gourd or bag
First man (a group of brothers) or first human couple come out from the underworld (a cave) or from a small enclosure on its surface (tussock, reed, tree, rock, gourd)
Woman has another toothed mouth (usually in vagina) or biting animals in vagina. Man inserts there a stone, bone, stick, etc. breaking or knocking out the teeth or extracting from there dangerous animals
Child is born from a tumor or swelling on person's body (on thigh, knee, finger, etc.) or is temporarily placed there or child grows from blood that flew out from a cut
A girl (a woman, a group of women) intentionally takes a penis-being, a snake, an eel, a lizard, a worm, a big water animal or water monster or a big terrestrial mammal for paramour. People kill or maim the paramour, the woman and/or her progeny or she is transformed herself into an animal. She is blamed for her behavior
There are teeth, blades or sharp stones in woman’s genitals, vagina is the biting mouth. (Only texts that are believed to correspond to reality are considered but not anecdotes and jokes)
People do not become young (usually do not shed their skin) anymore because certain person was bothered during rejuvenation or was not recognized by his family in his new guise
Spirits or unpleasant animals (reptiles, worms, etc.) are (often: concealed from the eyes of God or deformed) children or miscarriages of the same human couple or the same primeval ancestor who produced first human beings
The primeval couple is married. First wife has miscarriages or gives birth to spirits, worms or other unpleasant animals. Later, usually after the proper marriage ceremony is organized, she becomes to give birth to real human beings or gods
Two persons who loved each other (usually a man and a girl) are buried in one grave or not far from each other. After the burial something related to this event takes place (two plants grow up and stretch their branches to each other, smoke of two funeral pyres is merged, two birds flu out from the grave, two stars appear on the sky, etc.)
Person feeds others a food that is extracted from his, hers or somebody else’ body or is polluted by body extractions not informing about the source of the food