Top Definition
a person who has unpleasantly, sordidly or upsettingly engaged themselves to a lover's twin.
"f*** you, you f***ing FYKAKEY - you engaged yourself to my twin!"

"I suppose i could have done it in a less unpleasant way..."

"too damn right you sordid, upsetting FYKAKEY d*c*head"
by knightofcydonia March 22, 2009
6 Words related to fykakey

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