A sexual maneuver involving going "down under" and sucking the filth/exrement out of someone's butthole while manuvering the penis manually back and forth, the way one moves a vaccuum cleaner over a carpet.
I can't believe Jamese suggested that she give me an Australian vacuum, and then tried to kiss me afterwards! Oi, oi, oi!
by neergmas March 19, 2009
Get the Australian vacuummug.