I could be British!

Last few days at work, and inviting people to my leaving drinks.

Me: Hey, come to my farewell drinks!
American guy in office: YOU’RE LEAVING?!
Me: Yeah, I’m going back to Australia.
AGIO: YOU’RE AUSTRALIAN?
Me: Err, yeah. Why, what do I sound like?
AGIO: I dunno.. BRITISH!
Me: Don’t I obviously have an Australian accent?
AGIO: YOU DO NOW!!!