An expression used to encourage participants of Kairos, a Jesuit retreat, to live out the promises they made on the fourth and final day of the retreat.
Live the Fourth! is written on kairos t-shirts
by JesuitExperience March 31, 2009
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The fourth wall is the imaginary "wall" at the front of the stage in a traditional three-walled box set in a proscenium theatre, through which the audience sees the action in the world of the play.
The idea of the fourth wall was made explicit by philosopher and critic Denis Diderot and spread in 19th-century theatre with the advent of theatrical realism, which extended the idea to the imaginary boundary between any fictional work and its audience.

Speaking directly to or otherwise acknowledging the audience through a camera in a film or television program, or through this imaginary wall in a play, is referred to as "breaking the fourth wall" and is considered a technique of metafiction, as it penetrates the boundaries normally set up by works of fiction. This can also occur in literature and video games when a character acknowledges the reader or player.
Deadpool breaks the fourth wall many times in his new video game. One example includes:

Wolverine: What were you doing over there?
Deadpool: Just a little surprise for our player!
by DropTheB8ss February 14, 2014
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The fourth dimension is time, as defined by Einstein in regards to the Theories of Relativity. The Spatial dimensions are those of height, length, and depth. The fourth dimension can be related to a hypercube, much as the first dimension is related to a line, the second two lines connected at perpendicual angles to one another, and the third dimension being a cube. The fourth dimension is(sometimes) associated with the space-time continuum.
It is truly inane to travel to a universe that is based only upon the fourth dimension, as that woould include only time, and no being could truly exist.
by John the Redeemer June 12, 2006
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The Forlorn Vorn. The lusted-after coming age of terror and chthonic despair.

Will be ushered in at the Breaking of the Third Vorn - the Vorn of the Homochrist, which will be sooner than you think.

At this cathartic point, the poofternicious stranglehomold of egalitarianism, socialism and Christianity shall evaporate and be replaced with the most baleful and universal acknowledgement of the Necrowizard's bleak eternal supremacy of frost.
By Vorthak, my droogs! This pathetick homoverse breathes its last! And we are privileged enough to be bidden to its fall! ALL HAIL THE FOURTH VORN OF PERPETUAL BLASPHEMODESOLATION!
by Lord Grimcock August 26, 2008
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When you refer to your other intimate moments with your partner as first, second or third base, yet you have forgotten that the next step is referred to as a "home run", and is not called "fourth base". Yes, fourth base is sex, but come on! Just call it a home run! All the other bases are used in a reference to the bases is baseball. Have you ever played baseball? There's no fourth base!
"Dude, I totally got to fourth base with my girlfriend last night"

"You mean a 'home run'?"
"Yeah, either way we totally smashed".
by slurpeesaredelicous January 8, 2017
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A holiday taking place on the 4th of every month where celebrators each consume a Four Loko, an alcoholic beverage popular among high schoolers, college students and low 20 year olds, which was almost made illegal before the caffeine was taken out.

Another excuse for college students to get plastered on a week day.
College Sophomore: Whats the plan for Monday?
College Freshman: Taking it easy. I have my final exam the next morning and I'm on the edge of not passing
College Sophomore: bro its FOURTH LOKOS
College Freshman: oh %!#@, get me a Four Loko Gold
by teddygoodthrust February 27, 2019
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A holiday where you work towards achieving your dreams, noted my many to be on March 4th "March Forth".

This holiday is used as an excuse to make an effort, take a risk, or refuse to let reasons come between you and your goals.
On March Fourth (March 4th), people make a special effort to improve their lives, improve themselves and "March Forth" toward their dreams and highest aspirations.

Some examples:
Anything you DO that makes you feel good!
Reading a book by an author you aspire to write like.
Writing 2 pages/entries/edits on that thing you've been working on.
Taking extra time to express love for your friends and family.
Calling a record-high number of clients, and asking for sales.
Taking the stairs to your floor or walking to the next bus stop.
by AGS March 9, 2011
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