U theory is about when something is gone.
for instance the opposite of alot of words with U like it was real, it was ureal.

So when something was there, and then it's gone simply put U infront

1. The most annoying debate in Final Fantasy history.

2. The Final Fantasy 8 theory which states that Ultimecia is Rinoa's future self.

3. A proven theory.

A 2D fighting game engine, which can (in theory) be customized easily by adding new characters, backgrounds, sounds, and HUD elements (energy gauges and such).

The theory comes from the fact that the majority of M.U.G.E.N's character creators are whining bitches who lack any ability to share.

Apparently, taking a character and hosting it on your own site (known as warehousing) is an unimaginable wrong that you should be flogged for, even if you credit the character's 'creator'. Saving the 'creator's' bandwidth, and alleviating the need for people to spend hours wading through a million broken links and badly-designed sites in a multitude of languages is something that should never be done under any circumstances.

People often cite Elecbyte's discontinuing development of the software as the reason that the M.U.G.E.N community all but died. A little known fact is that the people who should have been the ones to keep it alive and fresh with new content actually killed most people's interest in the 'scene' by being possessive, whiny little bitches who decided that the best way to do justice to the concept of a nearly infinitely costomizable figting engine would be to do whatever they possibly could to stop new content from reaching people.

a theory thought of by Ami, usually is followed by a hypothesis

stiven theory \ˈstī-vənˈthē-ə-rē\
A series of theories, sometimes presented as facts, of Mr. Stiven that (a)explain historical events or (b)predict future ones.

1. a chain reaction similar to the falling of a row of dominoes, with each action (or fall) causing the next action (or fall).

2. a theory embraced by U.S. President Lyndon B. Johnson in the 1970s stating that allowing South Vietnam to fall to Communism would result in all of southeast Asia including even The Phillipines becoming Communist controlled. In this case, just two dominoes fell, Laos and Cambodia.

The theory consists of 3 main Sections:
1. You are a virgin. No matter who you think you are, or what you think you do outside of the internet, you are a virgin, any attempt to deny it makes you a gay virgin.

2. You have never won a football championship. Similar to S(1), you will never amount to anything, and any attempt at suggesting you have any sort of athletic talent is a complete fallacy, you are a lonely nerd.

3. If you are playing videogames and are older than 18, you're a 'no-life'+(s)1+(s)2. Seriously, it doesn't matter if you're in school to become an engineer, lawyer, neurobiologist etc, if you're playing a videogame at this age, whether it be with your old pals during study week, there's no way you will not be living on the street