Yes indeed... its one of the fave chants of all the St George-haters. Whenever in doubt, they just quote those immortal words from that witty little guy, St George can't play'.
To be honest, it never worried me what the leprechaun says. He was in a party mood, tanked to the brim and wearing a hat made out of beer cans... so good on him.
That was 10 years ago and they're still milking it for its worth...
(btw guys... just kidding... really)