a word used to say okay or alight, often used too many times in a conversation.

it means something like "Did you get it?" "Is it clear what I'm saying?" with a slight undertone of threat.

Used in place of "okay" or "alright" and essentially a cooler way to agree with something.
This is officially Kyleekate's word and not Matt's.

Euphemism for fu*k, pioneered by the creaters of that most heinous of cartoons Southpark ;)

In forums, m'kay is the word to use when you don't want to say "fuck".

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

made famous by mr. garrison in the south park movie mkay was to take over from saying the word fuck. though it is more commonly used today as a general cooler way of saying ok. it is also used commonly in chat rooms.