When you have turned Pepsi-Cola into episcopal, or cart-horse into orchestra, or even dishonest into hedonists you have created an anagram - a rearrangement of the letters in a word or phrase to form another word or phrase. Anagrams are said to have originated in the fourth century BC with the Greek poet Lycophron, and they have been popular in every period of history since then.

Anagrams become more interesting when they relate in some way to the original word or phrase.