Top definition
A sexual act where 2 men get into a 69 position and blow really hard down each other's assholes.

Originates from the fact it was first performed by an Australian and an Italian.
Matt: Hey, wanna make out?
Dan: Wash your mouth first, remember we just did the Australian Plumber.
by Rich Stone July 19, 2013
Get the mug
Get a Australian Plumber mug for your brother Paul.