I think it's rude to speak like that too Jeremy! You dont know whether they're talking about you or not. Then you hear a laugh or giggle...............
Anyway, like what afew people have said, you just have to grow a thicker skin and brush it off. I've lived and grown up around the Thornlie area my whole life and yes i experienced a slur or two, but you learn to harden up.
These people are not worth your time or effort.