A soldier’s letter home:
Dear Mom, I can’t tell you where i am, but yesterday I shot a polar bear.
Two weeks later, another letter home:
Dear Mom, I can’t tell you where I am, but yesterday i danced with a hula girl.
Two weeks later another letter home:
Dear Mom, I still can’t tell you where I am, but yesterday the doctor told me I should have danced with the polar bear and shot the hula girl.