O.K. a kangaroo walks into a bar, sits on a stool, orders a Guinness, flops down a hundred dollar bill. 
The bartender picks up the bill and promptly gives him back $2.95 in change. The 'roo looks at the Guinness  and the change and shrugs his shoulders.
Not having much else to do the bartender says to the kangaroo "You know, we don' get many kangaroos in here ".
The 'roo still looking at the change, says: "... and at prices like these you're not likely to get many more, either ! "