Shoot through like a Bondi tram
Leave quickly.
Person 1"Where'd Robbo go?"
Person 2"Shot through like a Bondi tram when the bill came."
You'll also hear
Do a Bondi tramleave suddenly
Where it's from
Sydney trams to Bondi Beach ran fast and express until the line closed in 1960.

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While you're here
Leave, often abruptly.
Extremely busy. Can be sarcastic about someone who isn't busy at all.
Extremely thirsty. Also used for weather that has not seen rain in months.
Means 'how are you?', won't hear it much in the cities but still said by old bushies.
Completely full, usually after a big feed. Sometimes used for very drunk.
Showing off and very pleased with yourself.