A stupid joke

A worm is sitting on a leaf and looks at the leaf and thinks, the leaf looks so great, I will eat this leaf now.
Up over the worm is sitting a bird and looks at the worm looking at the leaf and thinks, the worm looks so great, I will wait until the worm eats the leaf and then I will eat the worm.
Up on a branch over the bird is sitting a cat and looks at the bird looking at the work looking at the leaf and thinks, the bird looks so great, I will wait until the worm eats the leaf and the bird eats the work and then I will eat the bird.
So it happens, the worm eats the leaf, the bird eats the worm, the cat tries to eat the bird but slips on the branch and falls down into a puddle of water at the bottom of the tree.

What can we learn from this story?

The longer the foreplay, the wetter the pussy.