An uncommon nerd term for having sex since sometimes vaginal will precede oral therefore skipping one of four steps. This causes only three steps making a triforce analogy more appropriate than the original baseball comparison.
Another name for the fire tetrahedron. It is called this because it looks like the Triforce symbol from Nintendo's The Legend of Zelda. The Fire Triforce is made up of four small triangles that are arranged to look like one big triangle. The four triangles include heat, oxygen (02), fuel, and a chemical chain reaction. These are the elements necessary to create a fire as showcased by the fire triforce.
Imagine how cool it would be learning about the fire triforce in your boy scouts or brownies troop.
A Zelda themed position that, at least, involves two males, two females and a protractor. (Can involve three males and three females, but such complexity is rarely successful since it requires a second protractor).