A slang term to describe the popular Australian lager, Fosters.
Comes from the fact that a dingo is a type of Australian wild dog, and Fosters generally tastes like Australian wild dog piss.
Chav at the bar: "I'll have a pint of Dingo piss, and a blue WKD for the lady please mate."
Landlord: "Have you got any ID? You look about 12. And take your hat off inside my pub you scruffy bugger."