One hot summer  day, Boonga came to town with his dog, tied it under the shade of a tree, and headed into the pub for a  cold one..

Twenty minutes later, a cop entered  the bar and asked, "Who owns the dog tied under  that tree outside?"

Boonga called out, " It's  mine, mate."

"Your dog seems  to be in  heat", the cop said.

Boonga replied, "No way.  She's cool as, 'cause she's  tied up under that shade tree."

The cop  said, "No! You don't understand. Your dog needs to be  bred." 

"No way," said Boonga. "That dog don't  need no bread. She ain't hungry 'cause I fed 'er  this mornin'."

The exasperated cop said,  "NO!  You don't understand; your dog wants to  have sex!" 

Boonga looked at the cop and  said, "Well, go ahead. I always wanted a  police dog..."