sitting in a tree

A koala was sitting in a gum tree smoking a joint when a little lizard walked past, looked up and said,
'Hey Koala! What are you doing?'
The koala said, 'Smoking a joint, come up and have some.'
So the little lizard climbed up and sat next to the koala where they enjoyed a few joints.
After a while the little lizard said that his mouth was 'dry' and that he was going to get a drink from the river. The little lizard was so stoned that he leaned over too far and fell into the river.
A crocodile saw this and swam over to the little lizard and helped him to the side.
Then he asked the little lizard, 'What's the matter with you?'
The little lizard explained to the crocodile that he had been sitting with the koala in the tree, smoking a joint, but got too stoned and fell into the river while taking a drink..
The crocodile said that he had to check this out and walked into the rain forest, found the tree where the koala was sitting finishing a joint.
The crocodile looked up and said,'Hey you!'
So the koala looked down at him and said,

'Shiiiiiiiiiiit dude...How much water did you drink!?'