What does PHP stand for?

Hello Mr. Webmaster! I think it's not really correct to contact you with my question, but there wasn't another email address I could find. But maybe you can help me anyway. My question: What does PHP stand for? I don't want to hear "PHP" means "PHP: Hypertext Preprocessor". In this case - applying recursion - it would lead to: "PHP" stands for "PHP: Hypertext Preprocessor", which stands for "PHP: Hypertext Preprocessor: Hypertext Preprocessor", which stands for "PHP: Hypertext Preprocessor: Hypertext Preprocessor: Hypertext Preprocessor", which stands for ... and so on. So, what does the PHP in "PHP: Hypertext Preprocessor" stand for? "Personal Homepage" like it was called in the beginning of its history? I couldn't find an answer anywhere in the web, even not on this official site. It's not really important to me, but I'm interested! Thanks, if you can help me! Bastian Schulz, Germany