smiler joke

the pilot of an airplane had an heart attack and was slumped over
the controls
air traffic control got a message mayday mayday the piot of our
plane has taken ill
i am blind but i have taken the control of the plane we are at this
moment flying upside down
a voice came over saying well i will try and talk you down safely
but how do you know the plane is upside down
the blind man said i can feel the shit running down my back