1 definition by Paco Rabanne

Abbreviation for "you just know."

Typically used in reference to subtext, often sexual, that is hidden to most but blatantly obvious to those "in the know."
Example 1
Jeff: "You seen how happy Lindsey's been recently? It's like her mood's done a 180 since she broke up with Kenny and got that dog."
Mark, sarcastically: "I wonder why..."
Jeff: "What are you implying?"
Mark: "YJK"

Example 2
Carol: "You see that new fairy type Pokemon in Sword and Shield yet?"
Brad: "Yeah, Pokemon like Hatterene really put the 'Freak' in Game Freak. It's like Gardevior all over again."
Carol: "Yep, total fapbait. YJK"
by Paco Rabanne December 10, 2021
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