Two old diggers had been out in the bush for ages, their ute had
broken down and they were just about on their last legs trying to
walk out of the bush and find help. Finally, in the distance, they
saw the few buildings and sheds of a small bush town. As they entered
town a signpost informed them the town's name was Mercy. "Never heard
of it" said one digger to his mate, "I don't care what it's called, I
just want a drink" replied his mate.

Of the very few buildings in the main street one had a sign on the
front proclaiming "Mercy Tea Bar". The diggers stumbled inside. A
well dressed and rather prim lady was standing behind the counter;
"Good morning gentlemen and what can I do for you?" she asked in a
superior tone. "Jeeezzzz Sheila give us a couple of beers will yer"
replied one of the diggers. "I'm sorry" said the lady "but we only
serve koala tea in this town". "Strewth!" chorused the diggers; "OK
Sheila, we'll drink anything right now, give us two big mugs of koala
tea then". The lady disappeared through a curtain into a back room
from which the sounds of water and hissing steam could be heard. A
few minutes later she returned with two, large, steaming mugs which
she placed on the table in front of the diggers. The men look down at
the mugs and amidst the brown liquid they can see a little, furry
koala face looking up at them and a set of little paws clinging to
the top of the mug. Now these guys are rough, tough and hardened men
but even they are taken aback by this sight: "Jeeezzzz Sheila" says
one, "Couldn't you even strain it first!?"

The lady looks disdainfully at the diggers and replies in a very prim
voice: "Certainly not! The koala tea of Mercy is not strained".