2 men were out camping in the bush. 1 was a detective while the other was an astronomer. They put up the tent and slept (it was night). In the middle of the night, the detective shook the astronomer to make him wake up. "Wake up! Wake up! Look up! What do you see?!" called the detective. "I see heaps of stars." replied the astronomer.
"Which means?" asked the detective. "There could be life forms near those." said the astronomer. "John, you idiot!! It means someone stole our tent!" roared the detective.