A musician from the band Jamiroquai who spends his spare time collecting hats. He is also an enviromentalist who likes buying Supercars.
Person 1: I need a hat. My ears are cold.

Person 2: Just take one of Jay Kay's. He has plenty.
by Lost Cosmonaut of Cheshire September 16, 2017
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Another way of saying Just Kidding, or J/K on IM related messages.
Cool Guy: Hey your fat!
Nice Girl: What! Never talk to me again!
Cool Guy: Jay kay!
Nice Girl: Haha, okay!
by Sanel Osmanovic October 6, 2005
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The pronounciation of the acronym jk, which stands for just kidding. Used as internet lingo, or, for really cool people, in real life conversations.
John: ...um...I think I might be gay.
Rob: Will you marry me?
John: jay kay! ...and...uh...no?
by Mikey P in the Flesh July 19, 2005
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a cooler way of spelling out jk and you'll make more friends this way
me: IM GONNA DO IT
friend: NOOO YOU CANT!!!
me: dont worry about it. i'm just jay kaying you
friend: wow your cool and i want to be your friend
by gonetotallymad April 3, 2007
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when your so bored you wonder how you spell each letter of the alphabet.
"hmm I wonder how to say each letter in the alphabet"
"I know

Ay, bee, see, dee, e, ef, gee, aitch, eye, jay, kay, el, em, en, oh, pee, que, ar, es, tee, you, vee, double you, ex why, zed."
by boooooooooooooored June 2, 2021
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