Some information for Australian travellers heading to Beijing for the 2008 Olympics:
The word "Oi" sounds remarkably like "Oy", the Cantonese word for "love".
The word "Aussie" sounds remarkably like "Au-Shi", the Cantonese word for "shitting".
So if you're getting some strange sideways looks when chanting "Aussie! Aussie! Aussie! Oi! Oi! Oi!", now you know why.