Two blondes decided to go out to the county for a hike and to enjoy nature. They
were walking along and admiring all of beauty of the countryside. Suddenly one
blonde looks down and says, "Oh! look! Deer tracks!"

The second blonde says, "Those are not deer tracks, they are rabbit tracks."

The first blonde says, "No they are deer tracks. There are lots of deer out here."

The second blonde says, "My father goes hunting all the time, those are rabbit
tracks."

The first blonde says, "They are too large to be rabbit tracks"

The second blonde says, "I have a book on animals, they are deer tracks"

They argued back and forth like that until the train hit them.

Of course you could change the words around, just switch blondes for rabbits and deer tracks and rabbit tracks for B.F. Goodrich tracks and Firestone tracks.