Australian slang: Incredible or ridiculous luck
Australian slang - incredible good luck. "Oi cunt, if you jag that Quinella, it's definetly your shout"
Alternative usage;
Q:"Did you here Steve jagged a foot long flatly?"
A:"naa bullshit, no way he's got any talent with a fishing rod"
A2: "100%, Steve caught a flatly straight of the wharf, he totally jagged that fish. He's got more arse than class some times"