Refrigerator.

How do you get an elephant into a refrigerator?

I don't know, how?

You open the door, put it in, and close it. How do you get a crocodile into a refrigerator?

Open the door, put it in and close it.

Wrong! You have to take the elephant out first.

That's stupid.

Whatever. Okay, how do you cross the Nile without getting eaten?

I don't know, how?

Just swim! The crocodile is in the refrigerator!

This is horrible, please stop.