I would never have believed it unless I listened to it myself.
I'm Australian, and speak the dialect known as "wog".
To me, it does indeed sound like "fuck", more so, I can't make out how it could sound like "bark" like it supposedly is. I'm guessing it's the dropped, shortened or supressed "B"s that bring it closer to "fuck". That said, I'm usually ok in deciphering english accents, more so here because the words leading up to it had an english accent.
And yet, I still can't bring myself to admitting it sounds like "bark".
I guess this is why you should never call your car "Pajero".
When you're selling to a worldwide market, accents DO make a difference...
Now excuse me while I got to the shops and see if it's available here... :-)