Page "Recursive acronym" Paragraph 51

* Most recursive acronyms are recursive on the first letter, which is therefore an arbitrary choice, often selected for reasons of humour, ease of pronunciation, or consistency with an earlier acronym that used the same letters for different words, such as PHP: PHP Hypertext Preprocessor, which was originally " Personal home page ".

However YOPY, " Your own personal YOPY " is recursive on the last letter ( hence the last letter had to be the same as the first ).