Cleftal Horizon
The crack that runs down the middle of your arse.
Where did he kiss you, the middle of your bottom? Well, just to the left of the cleftal horizon.
cleftal horizon
The transition area between gluteal cleft and buttock. An area that is not definitively crack or cheek.
A pubic louse in the in the butt-crack of murdered prostitute lying naked, face down, in the middle of the street at dusk would observe the sun to set over the cleftal horizon.