keong kan is the abbr for ki(go) ho(let) lang(people) kan(fuck). It can be used as adjective or noun.
adjective: You very keong kan, instead of attending lecture, you were playing games at home.
noun: You keong kan la, how dare you seduce my girlfriend!
noun: You keong kan la, how dare you seduce my girlfriend!
by Thamby May 17, 2005