a very bad joke relating to noah's ark:
when the ark landed and was opened, noah gave the command to "go out into the world, br fruitful, and multiply." few hours later, he came back around to see that there were two small snakes left in the ark but no other creatures. he told them, "c'mon now--be fruitful and multiply." one of the snakes replied, "if you can cut down a few trees nearby, we'll see what we can do." noah couldn't do this right away, but did notice that the snakes moved out of the ark at least and seemed to be enjoying themselves.
a while later, he remembered to do what the snake had asked, and checked back a few months later to find hundreds of baby snakes. he found the original one he had spoken to and asked why they had to have the chopped-down trees to complete their task.
the serpent said, "isn't it obvious? we're adders! we need logs to multiply!"