Sequenced joke!

1) How do you put a giraffe into a refrigerator?
You open the refrigerator, put in the giraffe and close the door.
2) How do you put an elephant into a refrigerator?
You open the refrigerator, take out the giraffe, put in the elephant and close the door.
3) The lion king is hosting an animal conference, all the animals attend except one. Which animal does not attend?
The elephant! He is in the refrigerator!
4) There is a river you must cross but it is filled with crocodiles. How do you manage it? 
You swim across. All the crocodiles are attending the animal conference! HAHAHAHAHAHAHAHAHA