Top definition
To hate on, cock block or otherwise ruin the fun for someone else.
Ex #1:

Person 1: Yo, I was at the club talking to this honey the other night, and Sandy came over and said "you know you are wrong for talking to her when you have a girlfriend."

Person 2: Really? Why'd Sandy go all Kan-Yay on you?

Ex #2:

Person 1: Did you see him jump on stage, hate of her performance, and ruin her acceptance speech?

Person 2: Yeah, I did. He straight Kan-Yay'ed that chick.
by xXJodiXx September 15, 2009
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