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When ketamine and cocaine are mixed together to create a dangerous drug combination (most commonly mixed at a ratio of 1:1).

'Yay' comes from a Spanish word for cocaine: 'yeyo' (also referred to on this site and the film Scarface). 'K' is slang for ketamine and the phrase rhymes with the dangerous weapon 'AK47' - referring to the drugs dangerous and uncertain nature.

The term was first used and created on 05/07/09 in Hyde Park, London, England by a guy 'Mustang D' who incidentally & unfortunately ended up in a festival medical tent due to the effects of a mixture of Yay-K47 and various other narcotics (illustrating the potentially dangerous nature of the drug).

In a very short space of time the term has since become an extremely popular substitute for the previous slang word of the same meaning: 'CK1' (cocaine-ketamine) - due to it's ingenuity. It is currently in use around the South of England but is rapidly spreading around the world due to the extensive use of the Internet and social networking websites.

Official spelling is 'Yay-K47' but 'YayK47', 'Yey-K-47' have also been used.

Buying Yay-K47 from a stranger can be dangerous as it is impossible to truely know the ratio of the mix and whether or not other narcotics are present. Mixing narcotics or any drugs can be extremely dangerous.
"mad weekend! got blown away by some banging Yay-K47 and turfed out by security"

"wanna get off ya face? get sum Yay-K47, it'll blow ya away!"
Yay-K47 by Mustang D July 6, 2009
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1. An extremely gay person.

2. The weapon of choice for a gay terrorist.
1. Check out that gay k over there.

2. that fagg is a gay-k 47.
Related Words

Zay-K-47 

A gangsta white rapper who goes by the stage name Zay-k-47. Birth name Zachary Lewis. "Zay K" currently resides in Keller Texas where he makes his funky beats with his best friend Lil B Zay K is most known for his hit singles such as, Clothes,Clothes and Past Time Apology. You can listen to his amazing songs on his fan page on Myspace. His best friend and Manager and promoter and ghost whiter "Lil B" has helped make Zay-K-47 a success and got him to where he is today he has amazing talent and could get anyone to where they need to go in the music industry. Zay-K will be a appearing on MTV Cribs and guest starring on BET. you should listen to Zay-K-47 and help keep young Zachary a STAR.

www.myspace.com/zay-k-47
person 1-Yo man you herd that Zay-K-47?

person 2-Hell yeaa And we party and we do drugs you aint fuckin with us we the new thugs!

person 1- BET

person 2- ONE

"the night is long like whats in my pants"

"this is zay-k-47"

"heyy....i like you...
"did you tell anna you liked her"
"what? what? no man? no.
"heyyy fool i did tell her that im sorry.."

hahaha :) gotcha
Zay-K-47 by Eightequals.D August 19, 2010
a very cool mutual who i love and appreciate, very cool pronouns and i love them sm /p -ivory
k47ya is a gay
k47ya by anonymous July 8, 2021

How bout dem knicks? 

A phrase referring twoard the New York Knicks.
Its usually said to break an unplesent moment of silence.
Guy 1: I think I may be gay.
Guy 2: ...
Guy 1: ...
Guy 2: How bout dem knicks?
How bout dem knicks? by Flame060 March 28, 2005
Word of the Day on June 8, 2026

Power Couple 

A relationship between two people who are equally as cool as each other. They are as individually awesome and fun to be around as they are when they are together.

Neither one depends on the other for their feelings of self worth- they know in their heart that they are just as valuable to the world as the other. Good looking, optimistic, and sparks a light in the world that people recognize that goes beyond a normal relationship.

In a power couple, if one person is flawed, the other person makes up for their weaknesses in strength. Together they are the epitome of what anyone would desire in a relationship. They encourage goodness in the world and make it a better place by being together.
I'm a fan of those two, they are such a power couple, the epitome of what anyone would want in a relationship.

I am envious of them because they are a power couple.
Power Couple by Pina28 May 23, 2012
Word of the Day on June 7, 2026
Spidey sense for evading poop on the street, canine or otherwise.
When walking in NYC or LA, you need shitdar.
Shitdar by Sickomonster June 3, 2026
Word of the Day on June 6, 2026