Aussie Trucker

This Australian truck driver is looking for a long distance driving job in Adelaide. He gets offered a job driving a load of bowling balls to Darwin. He’s not too keen on this, but he needs the money and so takes off.
A while along the highway he sees two Aborigines with a bike, in the middle of nowhere, so he stops and asks if they would like a lift. They say OK. The truck driver says, “All right, hop in, but you’ll have to ride in the back.”
A 100 km down the road he stops at a truck stop, which amongst other things, involves a load inspection by the local cops. He is asked where he is off to and he says, “Darwin”.
The cops go round the back, open the doors, slam them shut quickly and rush round desperately to the driver, saying, “For Chrissake get going to Darwin straight away, and don’t stop – two of your eggs have already hatched, and one of them has stolen a bike!”