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The Lord High Executioner of Titipu in Gilbert and Sullivan's masterpiece The Mikado. Ko-Ko is usually played by a baritone. He is generally considered the male lead in this operetta, and while he sings during almost every song, his only true solos are "I've Got a Little List" and "On a Tree By a River."

At the beginning of the operetta, Ko-Ko has been condemned to death for flirting, but the Mikado releases him and makes him the Lord High Executioner. His ward Yum-Yum is to be his bride, but she is in love with Nanki-Poo, the Mikado's son, who is in turn lusted after by a noblewoman named Katisha. After the entire cast attempts multiple times to sort out their mangled love lives, Ko-Ko finds love with Katisha, and they sing their famed duet, "There is Beauty in the Bellow of the Blast."
Ko-Ko has been played by such talented actors as Martyn Green and Eric Idle.
Ko-Ko by Pitti-Sing June 23, 2006
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A Korean... with a mad temper....or a korean friend that you just wanna call a terrorist....
Dude, that Ko Ko is Out of control
Ko Ko by Sean McDermott January 22, 2004

Ko ko bop 

Ko ko bob means taking drugs
"We're going ko ko bop"
Ko ko bop by Pinkukinku July 26, 2017

Ko-Ko-Kocaine 

"Hey, Ko-Ko-Kocaine!"

ko ko puff 

a person with a huge afro its just like a huge puff and masters at J walking and hes very perverted
ko ko puff can pull alot of stupid things at time
ko ko puff by ariel gad April 26, 2006

shimmy shimmy ko-ko stop

EXO-L slang for being disgusted/not happy or delighted with something and wanting it to stop
A: oNiOnHaSeYo
B: you need to SHIMMY SHIMMY KO-KO STOP

Ko-Koppin 

Someone, usually female, who has no limits or boundaries. Will do anything, typically sexual favors, for attention. Rachet
Sarah gave her boss a blowie so she didn't have to work on her birthday. She's such a ko-kopping whore!
Ko-Koppin by Ju1975 January 17, 2017