A vacationing penguin is driving through Arizona when he notices
that the oil-pressure light is on.  He gets out to look and sees oil 
dripping out of the motor.  He drives to the nearest town and stops
at the first gas station. 

After dropping the car off, the penguin goes for a walk around 
town.  He sees an ice-cream shop and, being a penguin in Arizona, 
decides that something cold would really hit the spot.  He gets a
big dish of vanilla ice cream and sits down to eat.  Having no hands,
he makes a real mess trying to eat with his little flippers.  

After finishing his ice cream, he goes back to the gas station and asks 
the mechanic if he's found the problem.  The mechanic looks up and 
says, "It looks like you blew a seal." 

"No, no," the penguin replies, "it's just ice cream."