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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

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