OK, this looks like a job for a 'rock' joke..... Feel free to post your own after this one.... here's my favourite

A man's on a boat, of to a desert island... as he aproaches the island, he begins to hear drumming. As he arives on the island, the drumming is increadibly loud, and just keeps going on and on. The guy goes over to one of the natives and askes, "what's this drumming", the native looks a little woried, and replies, "very band when drumming stops", our man looks a tad confused, so askes "what happens when the drumming stops", the native replied again "very band when drumming stops".

So the guy walkes of, finds a place to rest his head for the night, but no rest does he find, because this bloody drumming just keeps pounding away. Next day, he again aproaches a naitive, and askes, "What happens when the drumming stops". THe navite looks positively sick, deeply disturbed, and says, just like the first, "very bad when drumming stops".
Our guy walkes away, confuesed, tired, and bored silly by the repeative drumming that won't stop. Again, he can't sleep that night.
The next morning, he looses his temper, and he grabes the first native he see's. He yells at him, "What the **** happens when this drumming stops!!!!!". The native looks a little shocked by his actions, but manages to after regaining his composure, frankly replys..