Commanding your troops in Age of Empires II to arrange themselves into a spread-like formation, in which enemy troops cannot proceed beyond yours.

A formation in beer pong in which 4 cups are arranged in a rhombus shape, somewhat resembling the female vagina.

When you use the original meme format which is usually not accepted by memers instead by teachers

A play in doubles tennis in which the net player of the serving team stands at the center of the court, signalling behind his back which way he is going when the server serves. Done to confuse opponents, often used by the Bryan Brothers.

A tag on Yahoo! Answers which gives report monkeys an excuse to report questions and answers even without a legitimate reason.

Coined in Scott Westerfeld's book, So Yesterday, the Missing Black Woman Formation (sometimes called MBWF) is when, in popular media, there is a Caucasian female, a Caucasian male and one African American male together in a group. Together, they are meant to represent all walks of cultural identity, and at that effort, they fail.

It is usually used in a negative context.

More geek talk; the act wherein the geek's penis is pleasured, causing it to become erect (hard drive) and pleasured some more until it ejaculates (format).