One day at a busy airport, the passengers on a
commercial airliner are seated waiting for the pilot
to show up so they can get under way.

The pilot and copilot finally appear in the rear of
the plane and begin walking up to the cockpit through
the center aisle. Both appear to be blind; the pilot
is using a white cane, bumping into passengers right
and left as he stumbles down the aisle. The copilot is
using a guide dog. Both have their eyes covered with
sunglasses.

After a few minutes though, the engines start revving,
and the airplane begins moving down the runway. The
passengers look at each other with some uneasiness.
They start whispering among themselves and look
desperately to the stewardesses for reassurance.

Yet, the plane starts accelerating rapidly, and people
begin panicking. Some passengers are praying, and as
the plane gets closer and closer to the end of the
runway, the voices are becoming more and more
hysterical.

When the plane has less than twenty feet of runway
left, there is a sudden change in the pitch of the
shouts as everyone screams at once. At the very last
moment, the plane lifts off and is airborne.

Up in the cockpit, the copilot breathes a sigh of
relief and tells the pilot: "You know, one of these
days the passengers aren't going to scream, and we
aren't going to know when to take off!"