"RUNNING OVER A PIG" joke

A young bloke has started work on a property, and the boss sends him up the back paddocks to do some fencing work, but come evening he's half an hour late. The boss gets on the CB radio to check if he's all right.
"I've got a problem, Boss. I'm stuck' ere. I've hit a pig!"
"Ah well, these things happen sometimes," the boss says.
"Just drag the carcass off the road so nobody else hits it in the dark."
"But he's not dead, boss. He's gotten tangled up on the bull bar, and I've tried to untangle him, but he's kicking and squealing, and he's real big boss. I'm afraid he's gonna hurt me!"
"Never mind," says the boss. "There's a. 303 under the tarp in the back. Get that out and shoot him. Then drag the carcass off the road and come on home."
"Okay, boss."
Another half an hour goes by, but there's still not a peep from the young fella. The boss gets back on the CB. "What's the problem, son?"
"Well, I did what you said boss, but I'm still stuck."
"What's up? Did you drag the pig off the road like I said?"
"Yeah boss, but his motorcycle is still jammed under the truck."