The performer enters the stage with a wireless microphone in hand.
For some unknown reason, the mike is not functioning.
In a final fit of frustration at not being able to make the mike work, the performer puts it into a small paper bag.
The vag containing the microphone is then crumpled up into a very small ball and put it inside the jacket.
He then opens the bag and switch on the mike!
A perfect sponge rubber imitation of real wireless microphone.