Like a French Kiss only its Down Under with a mouthful of mints
I bought some mints and gave your gf an Australian Mint Kiss
The Australian Mint put out a tourism brochure which read "Visit the Royal Australian Mint? It just makes cents". Since this amazing pun was released, cool kids now describe something that makes sense as 'Australian Mint' .
"Yep, that idea is Australian mint"
The act of gaping your partners anus, then shooting tic tacs in the open hole like basketball while yelling, "From down unda!".
I gave my girl the ol Australian Breath Mint last night.