jaykay Share definition Flag meaning just kidding, coming from the abbreviation of jk (just kidding) You suck and your mom is a ho.....jaykay jaykay by YEAH! February 3, 2005 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug