Can't think of a good title for this one.

Interviewer: There are 500 bricks on a plane. 
You drop one outside. How many are left?
Applicant: That's easy, 499

Interviewer: What are the three steps to put an elephant into a fridge?
Applicant: Open the fridge.
Put the elephant in.
Close the fridge.

Interviewer: What are the four steps to put a deer into the fridge?
Applicant: Open the fridge.
Take the elephant out.
Put the deer in.
Close the fridge.

Interviewer: It's lion's birthday,
all the animals are there except one, why?
Applicant: Because the deer is in the fridge.

Interviewer: How does an old woman cross a swamp filled with crocodiles?
Applicant: She just crosses it because the crocodiles are at the lion's birthday.

Interviewer: Last question.
In the end the old lady still died, Why?

Applicant: Err....I guess she drowned?
Interviewer: No! She was hit by the brick. You may leave now