A man is driving down a lonely road.
He ends up behind a hearse. Like most hearses it has a coffin in the back. But there is something odd about this coffin, the coffin seems to be moving, shaking, bouncing almost.
The driver continues following the hearse for a few miles, the coffin in the back starts bouncing more and more.
At a particularly sharp turn, the coffin flies out of the back of the hearse. The coffin keeps bouncing, bouncing towards the driver.
The driver throws it in reverse, but the coffin is matching his speed. He whips his car around and floors it, but the coffin is hot on his trail, bouncing down the road.
Eventually, at a small town intersection the driver loses control. He crashes into a light post. He stumbles out of his wrecked car, only to see the coffin still bouncing down the road towards him.
He rushes towards the nearest building, a pharmacy. He runs inside looking for a place to hide. The coffin crashes through the window and chases him down an aisle.
The man stumbles to the ground, the coffin is almost upon him. In a panic he reaches out for something, anything, to try and defend himself from this coffin barrelling down upon him.
AND NOW FOR THE PUNCHLINE
He grabs a bottle of cough syrup.
And that stopped the coffin.