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yall ( you or you guys) aint(are not)
by lauren December 11, 2003
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Jul 15 Word of the Day
The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.
Billionaires are having a dick swinging space race while the earth experiences record breaking heatwaves that cause sea creatures to literally cook inside their shells. We need planetary quarantine.
by monkeylabor July 14, 2021
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A three way contraction combining the words you are not or you ain't.
y'ain't got shit on me son!
by DaveNoMore August 29, 2013
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3
A contraction of the two terms y'all (you all) and ain't (are not), resulting in one word that means "you all are not."
by QuantumOfSilence March 02, 2017
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4
You + All = Y'all
Are + not = A'int

Y'all + A'int = Y'aint

Meaning: you aren't, you're not, you are not, etc.
Jessica: *looks in mirror* ugh I am so ugly what the heck
Monica: girl please, Y'aint ugly one little bit
by Madeline Alissa Cremonesi July 05, 2018
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Yain't is a mix of words (you all are not) whom when put together, forms yain't.
Chris: "Come play volleyball with us!"
Austin: "No, yain't good at that"
by that one nibba whom curses November 02, 2018
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