The Beard Theory

If one's beard extends past certain parameters of length and neatness, it's length can represent the magnitude of their emotional barriers.
The Beard Theory was initially rejected by Urban Dictionary editors because they had beards that exceeded the acceptable length. The Beard Theory states that their beards created an emotional barrier between them and the previous submission, therefore allowing them to reject it so willingly.
by By and Large March 19, 2015
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Bitch Theory

The recent observance over time of the changing definition/usage of the term "bitch". Specifically, Bitch Theory describes the change from the word bitch being derogatory, to it being a term for coolness, much like the change in the definition/usage of "nigga" in recent times.

Note:

1. Females use the term bitch to demonstrate coolness amongst themselves.

2. If a male calls a female a bitch it is seen as unacceptable or derogatory by females and males.

3. A less direct term females use in place of bitch is "bitty(s)" or "bittie(s)".

The Bitch Theory is basically a new double-standard.
Bitch Theory in action:

Example 1: Female: "I'm a hot bitch! :)"

Example 2: Female to Females: "C'mon bitches, let's go clubbbin' ! "

Females: "YEAA BITCHES! <3"

Example 3: Male to Female: "Your a hot bitch! :)"

Female to Male: "Watch the language bud."
by Eruvadhron_LOE December 09, 2010
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Ass theory

Ass theory dictates that any object that came from an unexplained location (between 138mm and 1002mm) came from an individuals anal cavity.
Bob asked " Where'd that squirrel come from?"
Tony says " Ass theory is the only explanation."
by nanananinagga August 22, 2009
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Pizza Theory

A theory applied to sex that uses pizza as the example.
There is good pizza, bad pizza, and great pizza. Any of these are better than no pizza at all. The same goes with sex.
Guy 1: How was it?

Guy 2: You know the pizza theory.
by Goingreen April 24, 2009
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music theory

1. The study of musical structure and aesthetics, concerning chord structures, musical intervals, rythms, meters, scales, etc.

2. Something that the majority of modern music artists lack knowlege of
Most recording artists seem to think that fashionable clothes and expensive studio recordings, rather than solid music theory, can make their music good.
by Juan September 29, 2003
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The Carter Theory

A theory expressing the idea of a severe underdevelopment of the brain in the fetal stages that alter the brains ability to intercept and translate sarcasm. The effects of this rare mutation cause one to be "farcically acrimonious" (absurdly bitter). The unfortunate effects may portray the person as an angry or irascible person.
The Carter Theory completely explains why that guy is such an asshole.
by downs is the new up October 08, 2009
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The McGuyver Theory

Saying that since McGuyver can make anything out of nothing, McGuyver can fix any and all problems.
Guy 1: My car battery died in the middle of nowhere
Guy 2: If McGuyver were here he would use dirt, pocket lint and catus needles to make a new car battery and drive us home.
Guy 2 used The McGuyver Theory
by neanngis September 22, 2009
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