Warragamba Slammer

When someone is thirsty and wants a drink of Sydney tap water. Commonly used in Sydney.

"Can I please have a Warragamba Slammer? I am quenched. "

“Want a beer?”

“No thanks, I'll stick to my Warrgamaba Slammer.”

“Is that a vodka soda?”

“No, that is a Warragamba Slammer.”

“Can I have a glass of water?”

“You mean a Warragamaba Slammer?”