wow. just looked it up on www.webster.com. the official definition is still buttocks, so I say continue using it. how did this australian breach the subject of its british slang meaning?

maybe it's like us saying a$$.

nope. look it up.

i mean like a$$ is the same word for butt although a not nice term so maybe fanny is the same. btw the link isn't working.

what he explained fanny is the female genital area