It was very amusing to hear that yesterday. The radar controller is normally very professional, it was interesting to hear him speak with the ATC voice turned off. Surely he didn't just leave his hand on the button?
In fairness to the controller, some of the clearance requests they receive around Brisbane and the Gold Coast are a joke. No wonder he had the sh*ts.
As I say to the occassional student pilot - don't slag anyone off until you are on the ground and the radio is off.