fly, awesome, "the shit", sweetas, Antonym: Mingin
yo, that rugby game was mad kub.
The action on not being bothered.
Originally 'Kubuff', it was an attempt to verbalize the common text language term 'CBF' (cant be fucked). Along with additional laziness the word then shortened into its commonly known form today, 'kub'.
Guy 1: Do you want to play co-op call of duty?
Guy 2: Kub
Guy 1: Do you want to go into town for some food?
Guy 2: Kub, lets order pizza.