Short for "Miss ko na siya" a phrase associated with missing someone, specifically a love interest/crush.
Keith: Bro... MKNS ughhh....
McKinley: OK bro
When a black guy and a fat guy love each other
>oh austine ilysm
>oh cybon...hang up that computer call and kiss me on my hot mouth...im feeling romantical...
>OH YESS
*So begins.. Austibon..*