Did I ever tell you about the little red corpuscle who was swimming in the bloodstream of a horse?
This little corpuscle was always in a hurry. One day, he decided to play hooky from the school of red corpuscles, so he told his teacher he had a headache.
Well, this was a mistake. As he swam down the main artery, using the Australian crawl, he came to a fork in the stream - it was high tide.
The little red corpuscle took the fork on the starboard side. He proceeded to swim lazily down the new stream when disaster suddenly struck!
The little red corpuscle was swallowed by a huge virus.
The virus' name was Cyrus.
Thus, our moral: Never change streams in the middle of a horse!