What is the game Mouth plus two diagonal lines

Traditionally, the game of Holding the Pit is played on the word for mouth plus two diagonals, and is called "Holding the Cow" or "Walking the Toilet" in some areas.

Diagonal is a geometric term for a line segment connecting any two non-adjacent vertices of a polygon, or any two vertices of a polyhedron that are not on the same face. In algebra, a determinant of order n, the numbers from top left to bottom right are categorized as the primary diagonal, and the numbers from bottom left to top right are categorized as the secondary diagonal. Some mathematical conclusions related to diagonals are that a quadrilateral whose diagonals are bisecting each other is a parallelogram, and a quadrilateral whose diagonals are bisecting each other and equal is a rectangle.