One day there was an indian chief who was constipated. he sent one of his
warriors to the witch doctor to get some medicine. The warrior says "Big
Chief, no shit". the doctor gave him 1 pill and told him that the chief
should be fine tomorrow.

The warrior went back to the chief and gave him the pill. the next morning
the warrior was sent back to the witch doctor and says "big chief, no 
shit". the doctor gives him five pills and tells him to give them to the 
chief.

The next day the warrior appears at the witch doctor's house yet again
saying "big chief, no shit". the doctor gets annoyed and so gives the
warrior the whole bottle of pills to give to the chief.

The next day the warrior goes back to the witch doctor (AGAIN):

"Big shit, no chief".