ZUB is a generic term that can take the meaning of any word.
Also used in moments of uncomfortable silences.
A word like a reliable old friend - one you turn to when no one else is there to help.
Person 1: 'Where the ZUB are we dude?'
Person 2: 'ZUBbed if I know!'
Person 1: 'What you wanna do with this?'
Person 2: ' Just ZUB it man!'
Person 1: '......???....!!!.... :/'
Person 2: 'zubzubzubzubzubzubzubzub'
Person 1: :)