A large, tan, adventurous penis belonging to an Australian man. Often as spoken by non-native tourists visiting Australia who have a short fling with an Australian.
OMG, last night was crazy. Remember when you said that guy looked like he had a big old dongaroo? Well we went back to his place, and let me tell you, he’s packing big ol’ dongaroo.
Tim: I'd love to visit Australia.
John: Everything there is out to kill you. Poisonous spiders, sharks, snakes, drop bears, etc.
Tim: Dangaroo... I guess I'll never go.