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A French-Canadian loser who thinks they're tough but is just a sad sack of garbage.
My cousin is a Jabronecois. He tried to fight a cop and got tackled like a chump.
At the bar, the Jabronecois yelled 'I'm the best!' and then tripped over his own feet.
My teacher called my brother a Jabronecois because he failed math and still thinks he's cool.