I couldn't be at the last Mocha cafe open mike so a friend took over the MC duties for me. He started with a few jokes, picking particularly on drummers. Then he announced the first act and two guys came up with African drums. They settled themselves, got the mikes adjusted, and one looked out into the crowd and said, "Did you hear of the MC who told too many drummer jokes? He had to visit the proctologist after the show.!"