It's used on the popular television show South Park by Mr. Mackey (not Garrison) in place of certain obscenities.
"Step 4: Dont say fuck any more because fuck is the worst word that you can say, So just use the word m'kay!" - Mr. Mackey
by SpaceCowboy June 11, 2006

A phrase supplanting supercalifragilisticexpialidocious, used when one does not know what to say in reference to another person or situation, especially when one does not give a shit: As in,
Guy: "You know, if Link acquires 100 skulltulas, he will get a special reward, but it takes almost the whole game to get all of them, so what is the point, the game is over by the time you get the reward blah blah blah..."
Girlfriend: "M'kay!"
Girlfriend: "M'kay!"
by midnightrose August 22, 2003


by Chancer October 01, 2003

m'kay! is used as another word for okay.
m'kay! is mostly used by Mr. Garrison off of the South Park show.
m'kay! is mostly used by Mr. Garrison off of the South Park show.
by jordanna April 25, 2006

when a retard comes out of the closet
by icanread-dog April 26, 2006

by herby December 01, 2003
