A farmer has to go out to plough his rental field about 10 miles from his
farm. To get there he must drive his tractor, and his dog old Joe trots
along beside him.
Halfway through the ploughing, the tractor runs out of fuel. He wanders out
to the road and flags down a ride, which just happens to be a Ferrari. The
driver says, "You can have a ride, but that dog can't get in my car." The
farmer says, "Don't worry. Old Joe will keep up." The driver figures he'll
show the farmer just what his car can do and lets it rip. Just as he is
going into 5th gear, he looks out the window and sure enough Old Joe is
right beside him. He can't wait to have a look at the amazing dog, so he
slams on the brakes, and the car stops rather abruptly.
The driver jumps out exclaiming, "He's the most incredible dog I've ever
seen! But what kind of collar is that he's wearing?"
The farmer shook his head and said, "That's not a collar. That's his
butt hole. He's not used to stopping that fast."