LOL Queue has got it
his first thing was just playing and 'noising' along ---- a couple of notes and he stepped back from the mic to listen to his amp, with a very confused look on his face, then briefly stopped playing, and sang something to himself.
Then back to the mic ---- a couple of notes and he stopped, turned, put 2 fingers in his ears and sort-off popped them in-and-out, then checked the tuning.
Again - and it was normal, so he carried on with the performance. Then came the bit where he sang words it. Total complete confusion set in, you've never seen anything like it. Then he just forgot about using the thing and carried on.
Everyone knew, the other band members, the whole crew. They all kept straight faces somehow. Eventough it took a load of effort from those on and around stage. It was in the Sydney Exhibition Center, so a 10.000 plus audience.
The player was brilliant, but completely impossible to work with, rude, bad tempered, nasty. This was a small revenge

It was wicket!!