One of the most quintessentially Strayan traits / practices / characteristics, IMO, is the simple
g'day
I don't mean the sentiment of it, or similes of it, coz most countries would have that, ofc. I mean specifically the way we pronounce it, hence spell it.
Earlier this morn our lovely @AnnonBudgie made a toot commencing with that, & it put a big dopey grin on my weird dopey face.