A koala is sitting up a gum tree ... smoking a joint...
when a little lizard walks past and looks up and says,
"Hey Koala ! What are you doing?"
The koala says:
"Smoking a joint, come up and have some."
So the little lizard climbs up and sits next to the koala and they burn a few. After a while the little lizard says his mouth is 'dry' and is going to get a drink from the river. But the little lizard is so stoned that he leans too far over and falls into the river.
A crocodile sees this and swims over to the little lizard and
helps him to the side, then asks the little lizard:
"What's the matter with you?"
The little lizard explains to the crocodile that he was sitting smoking a joint with the koala in the tree, got too stoned and then fell into the river while taking a drink.
The crocodile says he has to check this out and walks into
the rain forest, finds the tree where the koala is sitting
finishing a joint, and he looks up and says "Hey you!"
So the koala looks down at him and says:
"Shiiiiiiiiiiit dude ... how much water did you drink?!!"