butt cleavage - cleavage from the land down under
People of Wal-Mart is riddled with people with serious, world class australian cleavage
by Kelly-TBCRI December 02, 2010
Exposed skin on the "down under" side of the breast such as under an extremely short crop top.
The cheerleaders had super hot outfits that flashed Australian cleavage whenever they shook their pompoms over their heads.
by mandingoh May 26, 2006