Vagina dentata

The motif does not have a single origin story; it appears across multiple folktale traditions. In Māori mythic material Hine-nui-te-pō, goddess of night and death, is described as possessing obsidian vaginal teeth and bites Māui; in Ainu legend a sharp-toothed demon is said to hide inside the vagina of a young woman and emasculate men on their wedding nights; Ponca and Otoe trickster tales portray a heroine whose vaginal teeth are damaged or removed by the hero Coyote. Secondary scholarly commentary (e.g., Erich Neumann quoted in summaries) treats recurring versions of the motif as a mythic pattern in which a male hero overcomes a dangerous maternal/sexual figure and removes her teeth, but the primary material remains a set of culturally specific narratives rather than a single creation myth.

Across sources the consistent image is that of a vulva or vagina containing teeth or tooth-like structures; details vary by tradition and retelling. Examples cited in folktale records include obsidian 'vaginal teeth' in the Māori depiction of Hine-nui-te-pō, a demon with sharp teeth in Ainu narratives, and accounts in some North and South American tales of women who place teeth in vaginas or of naturally toothed orifices. Modern literary and cinematic adaptations (e.g., the film Teeth) reinterpret the image but are treated in the sources as adaptations rather than canonical ethnographic evidence.

In the recorded tales the toothed vagina's primary narrative effect is the capacity to injure or kill male sexual partners — outcomes described variously as emasculation, castration, maiming, or death. The motif functions diversely: sometimes as an intentional trap by a dangerous woman or creature, sometimes as an inherent attribute of a supernatural female being (as in Māori myth), and in contemporary works as a defensive ability used against sexual violence. Many narratives resolve the danger by removal or destruction of the teeth (hero breaks or knocks out teeth; a blacksmith fashions an iron phallus in the Ainu tale) or by trickery and escape.