Ian2 said:
vesuvius said:
*snip*

I think its a Potato Putarto thing  (interestingly 'Your Arse is Grarse' works phoeneticaly over here - though I've never heard anyone use that expression). 

 

Over here an * is a cross between a horse and a donkey.

Interesting. In the US an * is a donkey. A cross between a female horse and a male donkey is a mule, the reverse being a hinny.