cracking cans 

Aussie expression of surprise referring to a woman's breasts when they're noticeable and appealing : i.e.great tits ! Since only aussies understand it, you may use it abroad loudly, in a bar for instance.

- Wow, check-out the red-head over there, mate.
- Cracking cans !
- yeah, nice ass too.

cracking cans by Boags July 24, 2007