That's because some of the programs and websites you use every day are filled with hidden jokes or secret features that prove that programmers are even nerdier than we had assumed. Like ...

We've told you about the most mind-blowing Easter eggs hidden in movies , music , video games , and even centuries-old works of art -- but there are other Easter eggs that don't require you to watch DVDs frame by frame or spend hours trying every possible button combination in Street Fighter II to seek them out. Hell, they don't even require you to leave your computer.

6 Creepy Hidden Messages in Your Web Browser

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There's a creepy hidden message in the Web browser you're using right now. Assuming it's Mozilla Firefox. If it isn't, then kindly open Firefox and read that sentence again. We'll wait.

Every Mozilla browser includes a special "about" feature that allows you to configure certain sections just by typing "about:whatever" into the address bar. For example, if you type "about:about," you'll see a list of all the menus they offer. Some of the menus are actually cute Easter eggs, like "about:robots," which takes you to a page referencing things like Blade Runner, Futurama, and the eventual annihilation of all mankind.

via Firefox

See? It's cute, and not at all sinister foreshadowing.

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However, if you type "about:mozilla," perhaps looking to learn a bit more about the browser, you'll come across a red screen with ominous Bible-like text written on it:

What the complete hell? What you've just read is an excerpt from the Book of Mozilla, an ongoing text of apocalyptic literature secretly inserted by Mozilla into each of its Web browsers dating back to when the company worked on AOL's Netscape in 1995. So if you typed "about:mozilla" 17 years ago, you'd see this:

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And in 1998, when the next version came out, it looked like this:

When Mozilla launched its own browser, Firefox, they kept including the secret messages to maintain the tradition, and possibly preserve their pact with Lucifer. Here's the passage from 2003: