And you thought being a horse 's ass was n't important ?
So , a major space shuttle design feature of what is arguably the world 's most advanced transportation system was determined over two thousand years ago by the width of a horse 's ass .
You thought being a horse 's ass was n't important ?
So , a major space shuttle design feature of what is arguably the world 's most advanced transportation system was determined over two thousand years ago by the width of a horse 's ass .