A cargo plane is in mid-flight way out over the ocean when suddenly the
cockpit door bursts open to reveal an armed, masked hijacker to a startled
pilot, copilot, navigator, and stewardess. He holds his gun at the pilot's
head and says, "Take this plane to {wherever} or I'm gonna spill your brains
all over the place. The pilot calmly reaches up, pushes the gun aside and says
"Look buddy, if you shoot me this plane will crash right into the sea and
you'll die along with the rest of us. The hijacker thinks about this and then
holds the gun at the copilot's head and says "Take this plane to {wherever} or
I'm gonna spill HIS brains all over the place." But the copilot also calmly
reaches up, pushes the gun aside and says "Listen to me. The pilot's got a bad
heart and he could keel over at the shock of my being killed like that. So if
you shoot me, this plane will still crash right into the sea and you'll die
along with the rest of us." The hijacker thinks about this for a moment and
then holds the gun at the navigator's head and says "Take this plane to
{wherever} or I'm gonna spill HIS brains all over the place." But the
navigator calmly reaches up, pushes the gun aside and says "I wouldn't do that
if I were you. Those other two guys have no sense of direction. Without me
they couldn't find their way out of a paper bag much less get this plane to
{wherever}. So if you shoot me, this plane will still crash right into the sea
and you'll die along with the rest of us." The hijacker thinks some more,
shrugs and this time holds the gun at the stewardess's head and says "Take
this plane to {wherever} or I'm gonna spill HER brains all over the place." No
one says a word but the stewardess leans over and whispers something into the
hijacker's ear. The hijacker turns beet red, drops his gun, and runs out of
the cockpit in a panic.

Later after the crew has tracked down the hijacker (whom they found cowering
behind some crates in the hold) and tied him up, the pilot asks the stewardess
what she said that terrified the man so. "I told him, sir, that if he killed
me, HE'd be the one who'd have to give you guys your blowjobs."