킹왕짱

From 킹 (king, “king”) + 왕 (wang, “king”) + 짱 (jjang, “king or leader”)

킹왕짱 • (king-wangjjang)

1. (Internet slang) The best; something that rules
   • 2009 April 3, "니콜라스 케이지 '케서방' 동영상 화제", Chosun Ilbo:

     또 니콜라스 케이지는 동영상 끝부분에서는 특유의 진지한 표정으로 "노잉, 짱이야!", "노잉, 킹왕짱!"이라고 말하기도 했다.

     tto nikollaseu keiji-neun dongyeongsang kkeutbubun-eseo-neun teugyu-ui jinjihan pyojeong-euro "noing, jjang-iya!", "noing, kingwangjjang!" irago marhagi-do haetda.

     And at the end of the video, Nicholas Cage even said "Knowing is the best!", "Knowing rules!", with his uniquely earnest expression.

• Frequently abbreviated "ㅋㅇㅉ" on internet fora.