Cracker bag
It's a slightly less offensive way of calling someone "a crazy".
Look Drew - She's a proper Cracker bag!
bag crackers
Crackers that you pack in your bag so that you have something to eat whilst unpacking your luggage.
Shit son; I'm damn near starving and jet lagged something chronic.
Should have remembered to pack my bag crackers.
Should have remembered to pack my bag crackers.