Joke of the week #10

I am running out of ideas, please send help

A koala and a lizard are sitting in a gum tree, smoking a joint. After a little while, the lizard's mouth got dry, so he told the koala he was going to go drink some water at the river.

He got to the river, hopped up on a log, and started drinking water. In his state of intoxication, he lost his balance and fell into the river, quickly being swept away. 

Nearby, a crocodile was watching all this unfold. He sawm over and helped the little lizard back onto shore.

"Are you alright? What happened?" asked the crocodile.

"Yeah I'm alright" the lizard replied, "I was smoking a joint with a koala just up the path there, I came down here to get some water."

The crocodile, laughing, said, "Man I've got to go check that out"

He walked up to the tree and called up to the koala, "Hey up there!"

The koala, stoned, looks down and says "Damn dude, how much water did you drink?"