Made popular by Mr. Mackey on the Comedy Central show South Park. Said after every sentence. Used in Place of ok.

Another word for o.k.(okay)

Popularized by Mr. Mackey of South Park. Can be added to the end of nearly any sentence. Also used alone as a question.

Slang for "Ok" originally coined in the cartoon South Park.

Pronounced: Mmmm Kay

A word commonly used by guidance’s councilor Mr. Macky from South Park that refers to okay..

On another note m'kay might be linked to the creators of South Park - Matt Stone / Trey Parker and there love of K / Ketamine

It's used on the popular television show South Park by Mr. Mackey (not Garrison) in place of certain obscenities.

Saying okay South Park style.
(came from Mr. Maki, m'kay?*lol)