It's Bad When The Drums Stop

Just got this joke from a friend of mine ...

A biology graduate student went to Borneo to take some samples for her thesis work. She flew there, found a guide with a canoe to take her up the river to the remote site where she would make her collections...

About noon on the second day of travel up the river they began to hear drums. Being a city girl by nature, the biologist was disturbed by the noise of the drums. She asked the guide, "What are those drums?"

The guide turned to her and said, "Drums OK, but VERY BAD when they stop."

Many hours past but the drumming did not cease. As the sun was about to set, suddenly the drum beats stopped...

With an expression of fear on her face the biologist turned to her guide and said, "The Drums have stopped, what happens now?"

The guide crouched down, covered his head with both hands and said, "Bass Solo."