Collingwood Supporter: Fuck that, mate! Carn the Pies!
Often used during horse racing ("Carn you sweet thing"), AFL football matched ("Carn the pies!") and when summoning friends ("Carn, poofter!")
See also www.carnyousweetthing.com
In other words, c'arn is the happy medium between 'come on' and 'carn'.