Mohammad Ali was on the plane and it was about to take off. The stewardess
came by and said "Please fasten your seatbelt!" MA answered "Superman don't
need no seatbelt," to which the stewardess replied, "Superman don't need no
plane, either!" I think he lost this one...
My favorite is about a man who tried to hijack a plane. It was a
charter flight, sitting on the ground. The guy runs across the
tarmac, forces his way into the plane, pulls a gun on the stewardess,
who starts to laugh....