Fissure

[Sarah]

A narrow opening, made by the parting of any substance; acleft; as, the fissure of a rock. Cerebral fissures (Anat.), thefurrows or clefts by which the surface of the cerebrum is divided;esp., the furrows first formed by the infolding of the whole wall ofthe cerebrum.-- Fissure needle (Surg.), a spiral needle for catching together thegaping lips of wounds. Knight.-- Fissure of rolando (Anat.), the furrow separating the frontalfrom the parietal lobe in the cerebrum.-- Fissure of Sylvius (Anat.), a deep cerebral fissure separatingthe frontal from the temporal lobe. See Illust. under Brain.-- Fissure vein (Mining), a crack in the earth's surface filled withmineral matter. Raymond.

[Lanell]

[A cut] inside [your anus]. A.K.A. [Butt hole] cut

[Zipporah Schumaker]

Caused by the stuffing of bananas up the anus.
Often experienced by [veteran porn] actors. e.g. [Bree Olsen], [Carmella Bing], Gianna Michaels, Flower Tucci.