There is only one joke I know, and it is pretty crass, but I’ll tell it anyway…
A koala bear is finishing up with a prostitute and starts heading for the door to leave.
The prostitute says, “Hey, where do you think you are going?”
“I’m leaving,” the koala bear retorts!
“Aren’t you forgetting something? You’re supposed to pay me,” she responds.
Indignantly the koala bear replies, “Where is it written that I have to pay you?”
The prostitute walks over, pulls a dictionary from a shelf, flips through the pages and proclaims, “Prostitute – a woman who gets paid for having sex.”
Not to be outdone, the koala bear snatches the book from her hands, flips back several pages and declares, “Koala Bear – eats bushes and leaves!”