An alien ship runs out of fuel and crashes out in the middle of 
the desert. The first alien tells the others to follow him 
because he can find help. They come across an old gas station, 
the first alien goes up to one of the gas pumps and says, 
"take me to your leader."  It doesn't respond.

The alien takes out his gun and once again tells the gas pump 
to take them to their leader.  One of the other aliens then 
says, "I wouldn't do that if I were you, he looks really mad."  

The first alien says to the gas pump, "by the time i count to 
three you had better take us to your leader.  One. Two. Three."  

The alien then fires his gun. The gas pump blows up sending 
the aliens flying backwards.  The first alien asks the other one
how come he knew that the gas pump had such a bad temper.  The 
alien responds, "As I see it any guy who can whip his dick out, 
wrap it around his head three times, and then shove it back into 
his pocket, has got to have a bad temper."